ATLANTA — Rapper T.I. is expected to appear before a federal judge in Atlanta to explain why his probation shouldn't be revoked after his recent arrest in Los Angeles.

U.S. District Judge Charles Pannell Jr. signed the summons for T.I., whose real name is Clifford Harris, on Thursday. The same judge sentenced Harris for firearms violations.

The order lists three possible violations of his bond: possession of ecstasy, testing positive for opiates and associating with a convicted felon.

Pannell did not set a date for the hearing.

Los Angeles County Sheriff's officials say the Grammy award-winning rapper was stopped Sept. 1 on a Hollywood street after making an illegal U-turn. Police say they found several pills confirmed to be a controlled substance.