OAKLAND — BART service was significantly delayed Monday night after police activity closed the Lake Merritt station, disrupting service between Lake Merritt and Fruitvale stations.

Trains on the Berryessa/North San Jose-Richmond and Berryessa-Daly City lines are turning back south of Fruitvale Station due to police activity, an agency spokesperson said at 6:50 p.m.

Daly City-Dublin Pleasanton trains are also being diverted to MacArthur station.

BART initially announced police activity at 6:22 p.m. and later reported that a person entered the lane of the Lake Merritt station, which was later closed as a precaution.

BART initially reported stations closed between the Coliseum and Lake Merritt, then later said they were closed between Fruitvale and Lake Merritt stations.

There is currently no service between Fruitvale and Lake Merritt stations.

AC Transit provided a bus bridge at West Oakland station to 12th Street, Lake Merritt, Fruitvale and Coliseum stations. There is also a bus bridge in Fruitvale to take passengers to Lake Merritt, 12th Street and West Oakland stations.