PLANO, Texas - Plano police now believe that a house explosion on Monday may have been intentional.
No other information was given, including any new evidence that would explain the new theory.
The man who lived in the home barely survived the blast, and it's unclear still if he's going to pull through.
It's also unclear if he gave investigators information to change the course of the investigation.
People living in the area now have even more questions.
"We’d like to know could it happen to us and what should we do to prevent it," said Plano resident William Hayden.
The blast was felt a mile away.
Plano Fire-Rescue previously said Monday’s explosion was not a crime scene.
The Plano Police Department’s hazardous devices unit responded to the scene with an explosives detection canine, but the canine did not hit on any explosives or hazardous materials.
Investigators initially determined the cause to be an isolated gas leak. In fact, neighbors met with an attorney Wednesday over concerns about future gas leaks.
Attorney Ted Lyon sued Atmos following a 2018 gas explosion in Northwest Dallas that killed a 12-year-old girl.
Some Plano residents living near the explosion say they’re not ruling anything out.
"No later than Monday of next week we’ll have our own experts on the ground," Lyon said.
Atmos told FOX 4 it conducted its own safety checks and ruled out systemwide involvement in Monday’s explosion.
Brooke Costilla lives across the street. She’s having a baby in three weeks, but her home — like others impacted in the neighborhood — is boarded up and her family can’t go inside.
"We’ve just got to get everything out of our home and then we’re waiting on structural engineers to find out what the next process is because our home is red-tagged right now," she said.
The Jagielski family living next door all had to be treated at area hospitals. Friends helped pull some of their belongings out of the home.
Now, questions swirl about who could be responsible. Police did not say who may have been involved or whether anyone was in custody or may be put into custody.
Neighbors are just grateful the injuries are not worse than they could’ve been.
Police and fire officials did not give any additional information. Investigators haven’t really said anything about the man who lives inside the home that exploded. At last check, he was still in critical condition.