EL RENO, Okla. - Investigators are still trying to figure out what caused a house explosion in El Reno Wednesday afternoon.
Shortly before 4 p.m. on Wednesday, authorities were called to a home at 1120 S. Hadden in El Reno after a possible explosion.
Residents three blocks away reported hearing their windows rattle and feeling their floors shake.
El Reno officials confirm one person was injured and taken to a nearby hospital for treatment.
She remains in critical condition, according to El Reno fire officials.
Investigators still haven't been able to determine what caused the explosion.
Fire officials said they haven’t found any explosives, and ONG claimed there’s no evidence of a natural gas leak.
On Thursday, caution tape blocked off the damage site, not far from Hillcrest Park.
Neighbors are still shaken about the unexpected event.
"All the sudden, we just felt this vibration, this big explosion, and we didn't know what it was," said Danny Rundell.
Rundell, who lives just over a block from the explosion site, said he was watching TV when it happened.
"I've never felt anything like that before in my whole life," Rundell said.
Even city officials are shocked.
"Not here in El Reno. Sometimes, you may see it on TV but, in 30 years, I don't think we've ever experienced anything like this," said Chief Kent Lagaly, El Reno Fire Dept.
The explosion caused the house to move about two feet off of its foundation, creating a slant.
Fire officials said the damage is too dangerous to stay like this, the whole house will have to go.
"The last thing we want is kids to come in here. Kids are curious. We just don't want anyone else to get hurt by anything happening with this structure until we can make it safe," Lagaly said.
Soon after the investigation, the demolition will begin, starting with the chimney - it’s leaning, on the verge of falling onto the neighbor's house.
"It couldn't have been a natural cause. There had to be something else. That's the only thing I could figure," Rundell said.
While a lot of questions up in the air, the fire chief said the explosion doesn't appear to be suspicious.
"Whatever caused this, it was not something intentional in any way, shape or form. Time will tell us," Lagaly said.