BART service is back on track after an hour-plus-long stoppage at the West Oakland Station, BART officials confirmed Monday morning.

At 8 a.m., BART sent an alert reading "There is a major delay in Downtown Oakland in the Fremont and San Francisco directions due to police activity." According to BART officials, that's because at around 7 a.m., a man reported to BART police that someone pulled a gun on him at the Richmond Station.

According to that report, the gun-wielding man possibly boarded a BART train. Police stopped the train at West Oakland and searched it, finding nothing.

BART says that trains as far away as North Berkeley, Walnut Creek and San Leandro were stopped, leaving passengers headed to San Francisco, Fremont and Richmond stranded. However, travel has since resumed, with residual delays expected.