The suspicious device was found attached to a gas barbecue grill in Lynn Saturday night, District Fire Chief Larry Godbout told The Boston Globe. No one was hurt, and Lynn police had evacuated the surrounding homes.
The home is about a mile from where a pipe bomb exploded on top of a parked car near the Swampscott town line Wednesday night, shattering its windows. That followed the discovery Monday of a pipe bomb taped to a propane cylinder a few blocks away in Swampscott that was removed and detonated.
After Wednesday's explosion, police said they had no reason to believe the first two bombs were connected. But now, "When you put two and two together, you have three incidents within a seven-day period,'' said State Fire Marshal Stephen Coan.
Lynn residents said the neighborhood is not known for violence or gang activity.
The first two bombs were made with different components, authorities said. Godbout said Saturday's device may have been a dud because it did not explode violently when detonated.