From the FBI:

By the time he moved to Alaska in 2006, Paul Rockwood, Jr. was an ardent follower of the American-born radical cleric Anwar al-Awlaki, who he met at a Virginia mosque in late 2001.

A military veteran himself, Rockwood believed it was his religious duty to kill those who desecrated Islam. In 2009, he began sharing his deadly plans with an individual he thought held similar views. But that person was actually an undercover operative employed by our Joint Terrorism Task Force (JTTF) in Anchorage.