ATLANTA — A 23-year-old man was convicted today of aiding terrorist groups by sending videotapes of U.S. landmarks overseas, after a federal jury rejected his arguments that his chatter about jihad was "empty talk."

The Atlanta jury found Ehsanul Islam Sadequee guilty of all four charges he faced after about five hours of deliberations that began Tuesday afternoon.

Sadequee could face up to 60 years in prison, according to prosecutors. In June, a judge convicted Sadequee's friend, Syed Haris Ahmed, of one count of conspiracy to provide material to support terrorism in the U.S. and abroad.

Prosecutors said the pair took a series of videos of the Pentagon and the Capitol and that Sadequee later sent them to suspected terrorists overseas.

Sadequee, who represented himself at trial, dismissed his discussions about jihad as "empty talk" and said he never followed through on any of his boasts.

"We were immature young guys who had imaginations running wild," Sadequee told jurors in his closing arguments Tuesday. "But I was not then, and am not now, a terrorist."

Prosecutors, however, depicted Sadequee as a dangerous terrorist wannabe who needed to be stopped before he took action.