LAWRENCE, Mass. (AP) -- Residents in communities north of Boston that were rocked by natural gas explosions were given the green light Sunday to return to their homes.
Gov. Charlie Baker and other officials announced the move at a morning news conference and said electricity was restored to nearly all affected homes and businesses in Lawrence, North Andover and Andover. Gas service will remain shut off while officials continue investigating what caused Thursday's explosions and fires, and crews inspect the gas lines and connections to homes.
Dozens of homes were destroyed or damaged, a teenager was killed and dozens of people were injured. Thousands of residents were forced to evacuate. Crews have shut off nearly 8,600 gas meters in the area and cleared homes of any gas.
Officials said gas company technicians will turn all the meters back after safety inspections of the entire system are complete — a process expected to take several weeks. They warned residents not to turn the meters back on themselves, not to turn on gas appliances until service is restored and to call 911 and leave their homes if they smell gas.
"It's evident to me and to all of us the Merrimack Valley and the residents of our state are being as supportive as they can be and as kind as they can be to one another during this most difficult time," the Republican governor said. "We still have a very long way to go but we're very happy that people can return to their homes this morning."
Firefighters in Lawrence responded to a fire at an apartment complex Sunday morning after residents had returned, but officials said it wasn't related to the gas problem.
National Transportation Safety Board Chairman Robert Sumwalt said Saturday that there was no evidence to suggest the explosions were intentional.
He said investigators will be looking at how local Columbia Gas officials responded to a "pressure increase" in the Lawrence area that was detected at the company's pipeline control center in Columbus, Ohio, prior to the explosions and fires.
Lawrence Mayor Dan Rivera became emotional at the news conference while thanking people for support and donations to the Lawrence Emergency Fund.
"People have been very generous," he said. "And usually, when we have issues like this, it's really hard to come up with cash because it's mostly stuff out of people's hands. So the fact that we were able to raise $100,000 in two days is heartwarming. It makes us very thankful."