Syrian minister seriously injured after bombing BEIRUT Lebanese security officials say Syria's interior minister suffered a serious back injury in a bombing of his ministry last week and is being treated in Lebanon. Interior Minister Mohammed al-Shaar was wounded in the Dec. 12 bombing in Damascus that killed several people and wounded more than 20. At the time, state-run Syrian TV said he was not hurt. The security officials said al-Shaar arrived in the Lebanese capital Beirut on Wednesday. They asked that their names not be used because they were not authorized to speak publicly. Meanwhile, there is also a report of an car bomb blast in central Damascus as fighting around the capital continues. Syrian government forces are carrying out a broad offensive against rebels in the suburbs of Damascus, the state media said Wednesday, as the United Nations appealed for a billion dollars to support rising numbers of Syrian refugees. The state-run SANA news agency said that troops have killed "scores of terrorists" - the government term for the rebels fighting to topple President Bashar Assad. The suburbs of the Syrian capital have been opposition strongholds since the uprising started in March 2011. The rebels have recently made significant advances in the area, capturing air bases and military installation and clashing with a pro-government Palestinian group for control of the Yarmouk refugee camp, located in the capital's southern part. SANA said Wednesday's fighting was taking place in the capital's southern outskirts of Daraya, Harasta, Douma and Hajar Aswad, an area neighboring Yarmouk. On Tuesday, Syrian fighter jets bombed Yarmouk for the second time in a week, sending thousands fleeing from the camp. There were no reports on casualties from those strikes. Similar airstrikes on Sunday killed at least eight people in Yarmouk, activists said. The rebel offensive in the camp, which began Friday, is aimed at driving out pro-government Palestinian gunmen of the Popular Front for the Liberation of Palestine-General Command. Most of the fighting on Wednesday was concentrated on surrounding districts outside the camp, the Britain-based Syrian Observatory for Human Rights said. It said the rebels took control of large parts of the camp after resistance from the PFLP-GC gunmen ceased that morning. The group relies on reports from activists on the ground. Since the camp's creation in 1957, it has evolved into a densely populated residential district just 5 miles away from the center of Damascus. Several generations of refugees live there, some employed as doctors, engineers and civil servants and others as day laborers and street vendors. Many Syrians have also moved into the camp area over the years. But as the civil war deepened, most Palestinians backed the rebels, while some groups - such as the PFLP-GC- have been fighting alongside the troops. More than two-thirds of the roughly 150,000 Palestinian residents of Yarmouk have left the camp since Friday when the fighting flared up, according to the U.N. Relief and Works Agency for Palestine Refugees. They have either sought shelter in the outskirts of the camp, in other parts of Damascus or other Syrian cities, or headed to the Syrian-Lebanon border, said Sami Mshasha, an UNRWA spokesman. Palestinian president Mahmoud Abbas said in a statement Wednesday he had asked U.N. chief Ban Ki-moon to help in bringing the Palestinian refugees in Syrian to the Palestinian territories. This could include the West Bank, where Abbas governs, or the Hamas-ruled Gaza Strip. The statement said there are 450,000 Palestinian refugees living in 10 camps in Syria. Abbas said Yarmouk, which is the biggest camp, "has been through a difficult situation due to the escalating conflict in Syria." Any movement of refugees into the West Bank would need the consent of Israel. Israel's Foreign Ministry had no comment. Among those who left their homes are more than 500,000 who fled to neighboring countries. In Geneva, the United Nations refugee agency appealed to international donors for $1 billion to support Syrians in neighboring countries and Egypt. Additionally, the U.N. is also appealing for more than $500 million dollars to help people inside Syria who have been driven from their homes during the civil war. The new appeal is based on planning estimates that up to one million Syrian refugees will need help during the first half of 2013. "Unless these funds come quickly we will not be able to fully respond to the lifesaving needs of civilians who flee Syria every hour of the day - many in a truly desperate condition," said Panos Moumtzis, the agency's regional coordinator for Syrian refugees. Children make up almost half of the refugees crowded into camps and host communities across five countries, and their numbers rise inexorably, the statement also said. About 525,000 Syrians are either registered as refugees or are being assisted in Turkey, Lebanon and Jordan. This is a seven-fold increase since May when 70,000 Syrians had registered for help. Many more Syrians are in Turkey, Lebanon, Jordan, Iraq and Egypt, but have not yet registered, the U.N. High Commissioner for Refugees said in a statement Wednesday. Since July, Syrian refugees have fled the conflict for neighboring countries at a rate of 2-3,000 a day, the agency said. More than 40,000 people have been killed in since the revolt started in March 2011 as mostly peaceful demonstrations against Assad's rule. It morphed into a civil war after some members of the opposition took up arms to fight a brutal government crackdown on dissent. Also, the last missing member of an NBC team that was kidnapped in Syria has been freed and is safely in Turkey, NBC News executives said Wednesday. Ian Rivers was part of the NBC team led by the network's chief foreign correspondent, Richard Engel. They were kidnapped in Syria on Thursday, and Engel and several other members escaped unharmed on Monday. "We're thrilled that he found his way to safety," said NBC News communications director Erika Masonhall. NBC said in a statement that Rivers got separated from the other journalists as the men escaped from captivity during a firefight between their captors and Syrian rebels.