Shortly before 7:30, a stopped Green Line trolley at Park Street rolled backward and hitched to the trolley behind it, officials said.

No injuries were reported after a Green Line trolley rolled backward and “hitched” onto another trolley Wednesday, according to the MBTA.

An MBTA Green Line trolley parked at the Park Street station collided with another trolley behind it Wednesday evening, NewsCenter 5 has learned. The incident happened just before 7:30 p.m. Wednesday.