ALBANY, N.Y. — Federal agents and Albany police raided a Muslim mosque overnight Wednesday and arrested two men for helping someone they thought was a terrorist, a law enforcement official confirmed to FOX News on Thursday. A block of downtown Albany (search) was sealed off with armed officers for several hours after the FBI, Immigration and Customs Enforcement and other agents executed search warrants at the Masjid As-Salam mosque (search) and two Albany-area residences, officials said. Yassin Muhhiddin Aref, 34, the Imam of the mosque, and Mohammed Mosharref Hoosain, the 49-year-old founder of the mosque, were arrested early Thursday morning....