(CNN) Residents returned home Friday after a natural gas leak forced evacuations Friday morning in Lawrence, Massachusetts, one of the communities hit last year by a string of gas explosions that killed at least one person.

Power was cut overnight to 1,900 homes in the city, about 30 miles north of Boston, due to the gas leak, National Grid spokesman John Lamontagne told CNN. About 80,000 people live in Lawrence.

The gas leak was traced to a line that was installed last year, though the leak's cause wasn't immediately known, Columbia Gas of Massachusetts President Mark Kempic said Friday morning.

Only 27 properties remained affected on Friday afternoon, utility officials said, and service was being restored.

No injuries, fires or explosions were reported, Lawrence Fire Chief Brian Moriarty said.

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