The bus operator had apparently parked the bus and exited the vehicle just before 1 a.m. when it suddenly started rolling backward.
The bus careened down Palmetto Avenue, striking several parked cars as it picked up speed.
One man who was attempting to change a tire on the street was forced to jump out of the way.
He was transported to Wyckoff Hospital for treatment of minor injuries. He was not struck by the bus.
Watch video of the runaway bus:
The bus came to rest in the fence of St. Paul's Lutheran Church on Knickerbocker Avenue. The city buildings department determined there was no structural damage to the church.
The MTA employee was not injured. The reason the bus started to roll is under investigation.