This story was updated at 7:44 p.m. with information from people who live in the neighborhood.
The explosion in a neighborhood in Plano this week that razed a house, damaged several others and left six people hospitalized “possibly intentionally,” authorities said on Wednesday.
The brief update from the Plano Police Department gave no indication of what made police think Monday’s explosion may have been intentional, or where it came from. Plano firefighters said on Tuesday that nothing in the explosion indicated foul play, instead accusing a gas leak.
Police said on Wednesday the incident appeared to be “isolated” and that there were no longer threats to the community. Plano police declined to provide further details, including information about someone’s arrest.
The explosion crossed Cleveland Drive, near West Park Boulevard and Ohio Drive, shortly before 5 p.m. Monday. One house was destroyed and the other two on either side of the house were badly damaged. Several other houses in the neighborhood had windows shattered by the explosion. The blast left a piece of roof embedded in the yard across the street, and white sunstroke blanketed nearby cars, houses and sidewalks.
Neighbors said within hours of the blast they believed it could have been caused by lightning from a thunderstorm that was hovering over the area at the time of the blast.
Plano Fire-Rescue spokeswoman Captain Peggy Harrell said on Tuesday that teams from the FBI and the Bureau of Alcohol, Tobacco, Firearms and Explosives inspected the site, including with an explosives-detecting K9, but found no evidence of criminality. It was not clear on Wednesday what changed.
Several neighbors on Wednesday said they were shocked authorities now believe the blast may have been intentional – and asked for more clarity on what led to the blast.
Jacqueline Hammond, who lives on the street just behind the scene of the explosion, said she was asleep when she heard a loud “bang”. She said she thought someone drove a truck into the house.
“I was surprised someone said it was intentional, but of course they gave us no reason why they thought it was intentional,” Hammond said.
Plano police and the Plano fire marshal are investigating the blast, authorities said on Wednesday.
Six people were injured, authorities said: an adult in the house that exploded, and two adults and three children in a nearby house.
The identities of those injured have not been released.
Editor-in-chief Hojun Choi contributed to this report.