PORTLAND, Ore. — A federal jury found an Oregon man guilty of terrorism charges on Thursday, rejecting the defense team’s argument that ­Mohamed Mohamud was entrapped or induced by a yearlong FBI sting that began to target him when he was a teenager.

Mohamud was accused of leading a plot to detonate a bomb at Portland’s 2010 Christmas tree-lighting ceremony. But the device he thought was a bomb was a fake, supplied by undercover FBI agents posing as members of Al Qaeda.