46-year-old woman WRTA bus driver killed, after her bus started to roll down a hill in North Brookfield, and she was struck.

A WRTA bus driver was killed in an accident in North Brookfield Wednesday afternoon.

The woman, identified as a 46-year-old Rutland woman, was helping her lone passenger out of the back of the bus when it started to roll.

A witness says the driver ran to stop the bus but she was hit.

The bus continued to roll down the street and hit a house.

The passenger suffered minor injuries.

The crash remains under investigation.