The name, address, and telephone number of the imam of the Masjid As-Salam mosque in Albany, New York, were found in a book in a terrorist training camp in Iraq—with the title, “The Commander:” Iraq Evidence Led Feds to Albany Mosque.

ALBANY, N.Y. —Information found in Iraq led federal investigators to become suspicious of an Albany, N.Y., mosque leader, FOX News has learned.

Last summer, U.S. troops discovered Yassin Muhhiddin Aref’s name, telephone number and address in a book left behind in a vacated terrorist training camp, a U.S. official told FOX News. The book also revealed that Ansar al-Islam, the group running the camp, had given Aref a title: “the commander.”

Aref, 34, is the Imam of the Masjid As-Salam mosque in Albany, N.Y. He and one other mosque leader were arrested Thursday and charged with helping an undercover informant posing as a weapons dealer who was plotting to buy a shoulder-launched missile that would be used to kill the Pakistani ambassador in New York City.