A train driver was killed and several passengers injured when two commuter trains collided and derailed during rush hour in Boston.

Terrese Edmonds, 24, was killed when the trains crashed near an MBTA station in Newton, Mass. Officials will look at the equipment, train tracks and signals and operations as part of the investigation, but a full report could take up to 18 months, according to the National Transportation Safety Board.

There were about 180 to 200 passengers on the trains at the time of the collision. In addition to the fatality, seven people were injured. One passenger was air lifted to a Boston hospital, and the other six were treated at local hospitals, National Transportation Safety Board Member Kitty Higgins said.

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