An investigation is underway into the cause of a deadly blowout at a Chesapeake Energy Corp. well in Central Texas on Wednesday afternoon that killed two people and injured two others.

The blowout occurred around 3:30 p.m. at the Wendl and Daniel H 1 H well drilling site in Burleson County near Deanville, according to the Burleson County Sheriff’s Department.

The fire continued to burn on Thursday before it was extinguished.

“At the time of the incident, workover operations were being conducted by Chesapeake contractors C.C. Forbes and Eagle Pressure Control,” Chesapeake spokesperson Gordon Pennoyer told NGI’s Shale Daily. “One contractor was killed at the scene and another died Thursday evening as a result of injuries sustained during the incident. Two others continue to receive treatment at regional medical facilities.

“The fire has been extinguished and the well is secured. Our thoughts and prayers are with those impacted,” Pennoyer said.

Air monitoring equipment was put in place, and initial readings indicated “no risk to public health and the environment.”

The damaged well is in the Upper Eagle Ford Shale, within assets that Chesapeake acquired in 2018 and started working early last year after the deal closed.

Burleson County said it had received mutual aid assistance from multiple agencies across the Brazos Valley, including College Station Fire Department.