Two people were killed after a natural gas well exploded and caused a fire that lasted for hours. Welders were believed to be working at the site at the time of the accident.

The accident occurred north of Pittsburgh around 9:50 a.m. in a wooded area. Even after firefighters worked to get the fire under control, some areas still burned for almost three hours.

According to a spokeswoman at the Department of Environmental Protection, the cause of the explosion is unknown but it is believed that people were welding in the area when the well caught fire. It is also unknown at this time why people were welding there.

Explosions can cause serious injury to all involved, our thoughts are with the friends and family of the victims.