Police are investigating a crash in Back Bay involving a Boston Fire Department engine that hospitalized five people and caused damage to nine parked cars.

Fire Department spokesman Steve MacDonald said the fire truck was traveling down Commonwealth Avenue, responding to a fire alarm on Boylston Street around 11:26 a.m., when it was involved in a collision with another vehicle at the intersection with Dartmouth Street.

MacDonald said the adult woman driving the vehicle and the four firefighters in the truck were taken to area hospitals with injuries that were not life-threatening.

The crash pushed the fire engine onto the sidewalk, where it totaled one parked car and caused a chain reaction, damaging eight other cars, he said.


MacDonald said the cause of the crash remains under investigation by Boston police.

#Breaking: Boston fire truck involved in crash in Back Bay. Several other cars damaged. pic.twitter.com/BDtHNKoMIO — DebG_TVNews (@DebG_TVNews) October 31, 2016

This is a developing story.