LAWRENCE, Mass. (AP) - Officials say at least six people have been injured in a series of fires and explosions north of Boston that authorities blame on over-pressurized natural gas lines.
Lawrence General Hospital says it's treating six patients from the gas explosions including two in critical condition.
Officials in Andover previously said at least three people, including a firefighter, had been injured in the town. It was not immediately clear if those were separate from the victims treated at Lawrence General.
State Police say at least 39 fires erupted Thursday afternoon in the communities of Lawrence, Andover and North Andover.
Electricity is being cut to residents in all three communities as crews work to prevent further damage.
Officials in all three areas said school will be canceled on Friday.
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