Pair of manhole explosions rock downtown Brockton

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BROCKTON, Mass. — Hundreds of people were without power early Friday after several explosions in a pair of manholes in downtown Brockton.

Brockton Mayor Bill Carpenter said in a tweet early Friday that power was cut to several streets after overnight manhole explosions near School and Montello streets. No one was injured in the blasts, he said; it's still unclear what caused the explosions.

The cause of the explosions is under investigation.

National Grid was at the scene investigating, along with Brockton Fire. Part of Montello Street, from Crescent to Lincoln streets, was closed.

Around 4 a.m., over 600 customers were without power. National Grid's website showed all customers had power back before 7 a.m.