LOS ANGELES—Prosecutors brought felony charges Monday against an Army reservist who allegedly stalked Ryan Seacrest, including showing up at the “American Idol” host's studio and attacking one of his bodyguards.

AP photo

Ryan Seacrest

Chidi Benjamin Uzomah Jr., 25, faces up to four years in prison if convicted of the stalking charge.

He was arrested Friday after he appeared at the E! Entertainment Television headquarters and tried to see Seacrest, whose radio show is produced at the location. A restraining order petition filed by Seacrest's attorneys stated he was carrying a knife.  “His aggressive and violent efforts to come into physical contact with me are extremely frightening to me,” Seacrest wrote in a declaration for the restraining order Friday. “They have jeopardized not only my personal safety, but also the safety and well-being of those around me.”

It is not his first brush with the law related to his Seacrest obsession.