Transit service was not seriously delayed after a San Francisco Municipal Railway bus crashed with two other vehicles in the city's Mission District this morning.

The collision occurred at 15th and Mission streets around 9:50 a.m., said Muni spokesman Alan Siegel. The bus involved in the accident was only slightly delayed.

“There wasn't a great deal of damage to the bus,” Siegel said.

One of two vehicles clipped a 14-Mission line bus, causing the accident. One person was trapped in the wreck and had to be extracted, according to the San Francisco Fire Department.

Three people were transported to San Francisco General Hospital for treatment to injuries sustained in the crash, fire officials said.

— Bay City News