Media playback is unsupported on your device Media caption Finding the Thai cave boys and getting them out 
 
 Rescuers will take no risks in freeing the 12 boys and their football coach trapped in a flooded cave in Thailand, an official said. 
 
 They have received their first food and medical treatment in 10 days. 
 
 Seven divers, including a doctor and a nurse, joined the group inside the caves in the north of the country after they were discovered alive on Monday. 
 
 Rescuers are now considering how best to bring the group to safety. 
 
 "We will not rush to take the lads out of the cave," the governor of Chiang Rai, Narongsak Osoththanakorn, told reporters, adding: "Whoever has zero risk first can leave the cave first." 
 
 More heavy rain could see water levels rise and threaten the air pocket where the group has taken refuge. 
 
 The boys were found nine days after they entered the caves in Chiang Rai province following a football training session and became trapped by rising waters from heavy rainfall. 
 
 On Tuesday, Thai officials told reporters that rescuers were providing health checks and treatment, and keeping the boys entertained, adding that none of those trapped were in a serious condition. 
 
 "They have been fed with easy-to-digest, high-energy food with vitamins and minerals, under the supervision of a doctor," Rear Admiral Apagorn Youkonggaew, head of the Thai navy's special forces, told reporters. 
 
 Why can't they swim out? 
 
 It is believed that most of the group cannot swim, complicating what would already be a difficult rescue. 
 
 Earlier, the Thai military said the boys would need to learn to dive - or wait up to four months for flooding to recede before they could get out of the caves, meaning food would need to be supplied for that time. 
 
 Interior Minister Anupong Paojinda later stressed the urgency of the evacuation, adding that rain was forecast "in the next few days", the Bangkok Post reported. 
 
 Attempts are being made to reduce the risk of further flooding of the caves by pumping water from the underground system, Mr Anupong said. 
 
 A phone line is also being installed so the boys can talk to their families. 
 
 The governor said that requests had been made to build "infrastructure" in the cave leading to the pocket where the teenagers and their coach are located. 
 
 The Thai authorities have appealed for donations of full-face scuba diving masks small enough to fit the boys in order to reduce the risk of their breathing apparatus coming loose as they travel through flooded passageways. 
 
 How were they found? 
 
 Two British rescuer divers who had flown over to join the search operation found the boys on Monday night. 
 
 The video of that first contact was posted on Facebook by Thai navy special forces. 
 
 The boys are seen by torchlight sitting on a ledge above water, responding to the divers that all 13 were there and that they were very hungry. 
 
 Media playback is unsupported on your device Media caption Bill Whitehouse of the British Cave Rescue Council has been in touch with the divers 
 
 They ask how long they have been underground and whether they can leave now. The divers tell them they have to wait, but say people will come back for them. 
 
 One boy replies: "Oh. See you tomorrow." 
 
 The search for the group had gripped the nation as it was unclear where they were or whether they were even still alive. 
 
 Families of the missing group were ecstatic at news of their discovery. 
 
 Thailand's Prime Minister Prayuth Chan-ocha said of the boys' discovery that "everybody is a hero". 
 
 "Thank you all Thais, thank you all foreigners," he said. 
 
 How did they get there? 
 
 The boys, aged between 11 and 16, and their 25-year-old coach went missing on 23 June. It is believed they entered the cave when it was dry and sudden heavy rains blocked the exit. 
 
 They were found on a rock shelf about 4km (2.5 miles) from the mouth of the cave. 
 
 It is thought the boys could move through parts of the cave in dry conditions but rushing waters clogged the narrow passages with mud and debris, blocking visibility and access. 
 
 Media playback is unsupported on your device Media caption Families of the boys have been celebrating after finding out their loved ones are alive 
 
 One of the toughest stretches for the divers came as they neared the so-called Pattaya Beach - an elevated mound in the cave complex - where it was hoped the boys had sought refuge. 
 
 Divers had to navigate a series of sharp, narrow bends in near-darkness. They completed the difficult journey to find Pattaya Beach flooded, so swam on and found the boys about 400m away. 
 
 How can they get out? 
 
 Bringing the trapped boys to safety is an extremely dangerous task given the conditions inside. 
 
 The Tham Luang cave complex is regularly flooded during the rainy season which lasts until September or October. 
 
 Image copyright Facebook/ekatol Image caption A Facebook photo shows the coach with some of the missing children 
 
 Experts have cautioned that taking inexperienced divers through the dangerous corridors of muddy, zero-visibility waters would be very risky. 
 
 Diver Ben Reymenants, who is assisting with the rescue mission, told the BBC that two Thai navy doctors had volunteered to stay with the boys for "up to four months" until the water receded. 
 
 Other teams are still scouring the mountainside in the hope of finding another way into the cave. 
 
 Media playback is unsupported on your device Media caption Diver Ben Reymenants is assisting with the rescue mission and says none of the boys can swim 
 
 Who are they? 
 
 The 12 boys are all members of a local football team and their coach is known to have taken them on occasional excursions and field trips. 
 
 Tinnakorn Boonpiem, whose 12-year-old son Mongkol is among the 13, told Agence France-Presse she was "so glad" to hear they were safe. 
 
 "I want him to be physically and mentally fit," she said. 
 
 "I'm so happy I can't put it into words," another relative of one of the group told reporters as tears of joy streamed down his cheeks. ||||| Media playback is unsupported on your device Media caption Saman Gunan lost consciousness on his way out of the flooded cave 
 
 A former Thai navy diver has died while taking part in efforts to rescue 12 boys and their football coach trapped in a flooded cave in Thailand. 
 
 Petty Officer Saman Gunan lost consciousness on his way out of the Tham Luang cave complex, where he had been delivering air tanks. 
 
 The boys have been trapped for nearly two weeks in a chamber in the cave. 
 
 They ventured in while the cave was dry but were caught out by a sudden deluge of rain, which flooded the system. 
 
 The group was found by British rescue divers after 10 days in the cave, perched on a rock shelf in a small chamber about 4km (2.5 miles) from the cave mouth. 
 
 Teams of Thai and international divers have since supplied them with food, oxygen and medical attention, but there are mounting concerns about the oxygen level in the chamber, which officials said had fallen to 15%. The usual level is 21%. 
 
 On the surface, a huge military and civilian rescue operation is racing against the clock to bring the boys to safety. Heavy monsoon rains are expected on Sunday, threatening further flooding. 
 
 Officials had initially considered leaving the boys in the chamber to wait out the rainy season - which could have seen them trapped there for up to four months. 
 
 But Thailand's Navy Seal commander suggested on Thursday that the divers may now have little choice but to attempt a daring emergency rescue - fraught with danger for the boys, who are aged 11 to 16 and some of whom cannot swim. 
 
 "At first, we thought the children could stay for a long time... but now things have changed, we have a limited time," Rear Admiral Apakorn Yookongkaew said. 
 
 A death in the cave 
 
 The death of Saman - a highly trained diver - on Thursday underscored the danger of moving from the chamber to mouth of the cave, and raised serious doubts about the safety of bringing the boys out through the cramped, flooded passageways. 
 
 The diver died after losing consciousness in one of the passageways, said Passakorn Boonyaluck, deputy governor of the Chiang Rai region, where the cave is situated. 
 
 "His job was to deliver oxygen. He did not have enough on his way back," Mr Passakorn said. 
 
 He said that Saman's dive partner tried to revive him but could not, and his body was brought out of the cave. 
 
 Saman, who was reportedly 38, had left the navy but returned to aid in the rescue operation. Said to be an avid runner and cyclist, he was part of the massive rescue operation launched after the group became stranded in the Tham Luang cave. 
 
 Officials said his funeral would be sponsored by the Thai king. 
 
 The search operation would go on, said Rear Adm Arpakorn. "I can guarantee that we will not panic, we will not stop our mission, we will not let the sacrifice of our friend go to waste," he said. 
 
 About 1,000 people are involved in the rescue operation, including navy divers, military personnel and civilian volunteers. 
 
 A lack of oxygen 
 
 Authorities say there are concerns about falling oxygen levels in the chamber where the boys and their coach are trapped. 
 
 Oxygen was being depleted by the large number of people working inside the cave network, said the Chiang Rai Governor, Narongsak Osotthanakorn. 
 
 Authorities are now working to get a 5km (3 mile) cable into the cave to supply the group with air. They are also trying to feed a fibre optic cable through to the group, to connect them to their families for the first time in nearly two weeks. 
 
 What are the rescue options? 
 
 The boys are being regularly supplied with food and medical care, but there are grave concerns over heavy rainfall forecast for Sunday. 
 
 Media playback is unsupported on your device Media caption Bill Whitehouse from the British Cave Rescue Council explains how the boys and their coach might be rescued 
 
 Authorities are trying to work out how best to bring the group to safety, with officials stressing they do not intend to take any risks with the boys' safety. 
 
 The military has been pumping water out of the cave but if it cannot hold the water level down, it will be left a stark reality: teaching the boys to use diving equipment and bringing them via a route which has already cost one trained diver his life. 
 
 Some local groups are searching in the hills for unknown entrances to the cave system, but none has yet been found. 
 
 If a rescue attempt fails, leaving the boys to wait out the rain brings with it another danger: that the sinkholes and streams in the hills above could flood the chamber completely. 
 
 Diver's death a blow to morale 
 
 Sophie Long in Chiang Rai 
 
 Rescue operation leaders here say most of those involved have been trained to work in high risk environments, and to deal with eventualities like this. 
 
 They say the death of Saman won't impact on their mission. But there is a different atmosphere today in the makeshift village that's evolved at the cave's entrance, and the death of a former navy Seal highlights just how dangerous the route out of the cave remains. 
 
 It is unlikely the boys will be told about the death. One of the prime concerns here is to keep them not just physically but mentally strong. 
 
 Today, the priority is to connect the fibre optic cable that will allow the boys to speak to their families. It is hoped it will be a vital boost for the young boys, after two long weeks underground.
– The discovery of 12 Thai boys and their coach still alive after 10 days trapped in a flooded cave has brought massive relief to their families and an anxious nation—but the military warns that their ordeal could be only just beginning. The group, discovered by two British divers late Monday, are on a dry rock ledge around 2.5 miles from the mouth of the cave, and the Thai military says it could be months before it can get them out, unless the boys learn to dive, the BBC reports. The cave in northern Thailand often remains flooded until the end of the rainy season in September or October, meaning the youth soccer team and their coach may need to have food and other supplies sent in for the next four months. Experts warn that it could be very difficult to get the boys, ages 11 to 16, to safety through miles of dark, narrow, flooded tunnels. "Trying to take non-divers through a cave is one of the most dangerous situations possible, even if the dives are relatively easy," US National Cave Rescue Commission coordinator Anmar Mirza tells the AP. Thai officials say they're committed to "100% safety" and will continue to explore their options, including draining water from the cave system and searching for shafts that could provide an alternative escape route. Officials say the boys are hungry and weak but in stable medical condition with only minor injuries. They have been provided with high-protein liquid food and will be given more supplies and visited by doctors in the days to come.