The Boeing 777-200 carrying 239 people lost contact over the South... (Associated Press) 
 
 Malaysia's Department of Civil Aviation director general Azharuddin Abdul Rahman, right, speaks as Malaysia Airlines Group Chief Executive Ahmad Jauhari Yahyain listens during a press conference at a... (Associated Press) 
 
 Malaysian maritime officials found some oil slicks in the South China Sea and sent a sample to a lab to see if it came from the plane, the Department of Civil Aviation chief, Azharuddin Abdul Rahman, told a news conference. "We have not found anything that appears to be objects from the aircraft," Azharuddin said, adding that the search operation has involved 34 aircraft and 40 ships covering a 50-nautical mile radius from the point the plane vanished from radar screens early Saturday about one hour into a flight from Kuala Lumpur to Beijing. "I can confirm that we have the visuals of these two people on CCTV," Malaysian Transport Minister Hishammuddin Hussein said at a news conference late Sunday, adding that the footage was being examined. Authorities have reviewed security footage from the airport and said the men who traveled on the stolen passports "are not Asian-looking men," Rahman said Monday. Do you know how he looks like?” 
 
 
 
 A reporter then asked, “Is he black?” and the aviation chief replied, “Yes.” 
 
 The passports were stolen from Luigi Maraldi and Christian Kozel in the last two years, and were listed as stolen on Interpol’s database. This photo provided by Laurent Errera taken Dec. 26, 2011, shows the Malaysia Airlines Boeing 777-200ER that disappeared from air traffic control screens Saturday, taking off from Roissy-Charles de Gaulle... (Associated Press) 
 
 A family member of passengers aboard a missing Malaysia Airlines plane wipes her tears at a hotel in Putrajaya, Malaysia, Monday, March 10, 2014.  Teams from nine countries working non-stop, officials say, as hunt goes on for plane missing with 239 people on board 
 
 Search crews involving nine countries are working “every hour, every minute, every second” across a huge swathe of the South China Sea but have yet to find any evidence of the missing Malaysia Airlines flight, the country’s civil aviation chief said on Monday. The Boeing-777 was cruising at 35,000 feet when it disappeared in apparently good weather, gave no indication of any problems and did not issue a distress call. An oil slick that searchers had thought might be from the plane turned out to be fuel oil typically used in cargo ships, according to Rahman. Vietnamese ships working throughout the night could not find a rectangular object spotted Sunday afternoon that was thought to be one of the doors of a Malaysia Airlines passenger jet. The Beijing-bound flight was carrying 227 passengers and 12 crew when it went missing around 40 minutes after its 12.41am take-off from Kuala Lumpur, over the seas between Malaysia and Vietnam.
– The fate of the missing Malaysia Airlines flight and the 239 onboard continues to stump officials. Authorities are considering every possible explanation for the disappearance, says Malaysia's civil aviation boss, Azharuddin Abdul Rahman. Among those explanations are engine failure, pilot error, or possibly suicide. But so far, searches have yielded little information—even with 40 ships and 34 aircraft investigating a radius of 50 nautical miles around where the plane dropped off radar screens, the AP reports. Nine countries are involved in the search, and they're working "every hour, every minute, every second," Rahman adds, per the Guardian. It's now after dark in the area, and the search will resume tomorrow. In other search news: As for hijacking, "we are not discounting this," says Rahman, via the AP. Malaysia says it has CCTV visuals of two people traveling with stolen passports. Officials said today at a news conference that the two were not "Asian-looking people," as per the BBC. One-way tickets under the names on the stolen passports—Luigi Maraldi and Christian Kozel—were issued at a Thai travel agency. Passengers traveling under those names were also booked on a one-way flight from Beijing to Amsterdam Saturday, says a rep for Royal Dutch Airlines. Maraldi was then due to fly to Copenhagen, while Kozel was set to go to Frankfurt, Germany. Malaysia is now downplaying reports suggesting Vietnam had discovered possible debris. "We have not found anything that appear to be objects from the aircraft, let alone the aircraft," says Rahman, per CNN. Officials had believed they'd spotted a life raft in the water, and helicopters were rushed to the spot—only to find a "moss-covered cap of a cable reel," NBC News reports. Meanwhile, oil slicks discovered in the South China Sea are not connected to the aircraft, Sky News confirms via AFP.