BOSTON (Reuters) - A blast was reported at a ball bearing manufacturer in southern New Hampshire on Monday, local media and fire officials reported.
It was not immediately clear how many people were injured in the incident, which occurred at approximately 3:30 p.m. ET (2030 GMT), WMUR television reported.
New Hampshire Governor Maggie Hassan said the state had opened an emergency operations center on the site.
The fire department in nearby Jaffrey, New Hampshire, said on its Twitter feed that it had been called to respond to a "major explosion" at the New Hampshire Ball Bearings Inc location in Peterborough, located about 75 miles northwest of Boston.
Peterborough Fire Department officials could not be reached for immediate comment and officials at the state police declined immediate comment.
(Reporting by Scott Malone; Editing by James Dalgleish)