Just after 1 p.m. on Monday, Westford firefighters responded reports of a brush fire near Stony Brook Drive only to find a train had caused multiple fires in the area.
According to scanner reports, sparks from a train moving through the area had caused those fires and others stretching back to the Shirley/Devins area.
Brush fires in Nabnasset were reported along Stony Brok Drive, Allison Drive, Brookside Road and near the Chelmsford border.
Police stopped the train for inspection shortly afterward, with firefighters from Westford and nearby towns extinguishing most of the fires before 1:45 p.m.
The Westford Template will provide more information as it becomes available.