The incident happened in the area of Sculley Road in Ayer around 11:30 a.m on Thursday, March 23, the Ayer Fire Department said on Facebook.
Ayer Fire said the railroad cars involved did not contain hazardous materials and they were mitigating the incident along with Ayer Police, the Department of Public works and railroad officials.
The Massachusetts Emergency Management Agency (MEMA) later clarified that the train cars were carrying trash and recycling, and that no further assistance from state officials was needed.
The cars were pulled by Norfolk Southern, which is the same company involved in the massive chemical spill in East Palestine, OH, on Feb. 3, WCVB reports.
Daily Voice will provide more information once it is made available.
Click here to follow Daily Voice Cambridge and receive free news updates.