A man was arrested today after allegedly saying this morning that he planted two bombs in BART's Civic Center station, a BART spokesman said.

Police arrested 46-year-old Don Stevens on suspicion of making a false bomb threat and interfering with railroad operations.

The Civic Center BART/Muni station was closed for about an hour, starting at around 9:30am, after a witness heard the man say he had planted the bombs. No trains traveled through the station, and police evacuated it.

The threat caused major delays throughout the BART system. Westbound trains turned around at Montgomery station and eastbound trains at 24th Street station, according to BART officials.

The search also halted Muni service through Civic Center station. Above the station, Market Street was closed to both vehicle traffic and pedestrians between 7th and 8th streets.

The station reopened just before 10:30am, after police searched it with dogs, BART officials said. —Keith Burbank