A male with a court order prohibiting him from BART, violated his court order by entering the Powell Street Station. The male was contacted by officers and was detained. The officers determined the court order was valid and the male was placed under arrest for violation of a court order. The male was searched, prior to booking, and officers discovered the male had several altered/forged BART tickets in his possession. A sergeant responded to approve the arrest. Detectives were notified of the case and officers interview the suspect but he did not talk to them about the forged/altered tickets. The male was booked into the San Francisco City Jail.