Investigators still working to determine cause of explosion at Massachusetts factory.
A Middleton, Massachusetts chemical plant exploded Sunday evening, shaking nearby homes, injuring four people and raising concerns about water and air safety.
The explosion rocked the Bostik Chemical Plant in Middleton just before 8 p.m. Sunday.
Bostik manufactures plastics and adhesives.
Firefighters from several communities were called in to battle the flames.
Police said four employees suffered non-life threatening injuries.
Following the explosion, people living in the area noticed a strong odor.
Officers initially said the air quality may not be safe, but evacuations were not needed.
“The message that we've sent through the local police departments and the state police to local residents is that they should just stay in their home, shelter and place and await further information and now that we are getting the initial information back. It is some good news in that there are no immediate threats,” said Chief Frank Twiss of the Middleton Fire Department.
The explosion did not damage any nearby houses, but it certainly frightened some residents.
“I was home, sitting down watching TV and the next thing I know there was a big explosion,” said a nearby resident.
“It just shook the whole house,” said one person.
“It was unbelievable. It sounded like something crashed into the ground,” said a nearby resident.
Officials were on the scene Monday trying to determine the cause of the blast.