From the Graham Police Department:

The victim was identified as Christopher Andrew Wilbur, 34 years of age, from Wichita Falls, Texas. Wilbur was reported to have severe electrical burns on his body. Wilbur was initially treated at the scene by Graham E.M.S., transported to the Graham Regional Hospital, and then transported by Care Flight to Parkland Hospital in Dallas, Texas.

During the investigation, Officers learned that Wilbur was a contract electrical worker who was working alone inside the “electrical room” that is located in the stockroom at Wal-Mart. Wilbur was there to replace a breaker. According to witnesses at the scene, Wilbur came running out of the “electrical room” and it appeared that he was on fire. Wal-Mart employees who were in the stockroom came to Wilbur’s aid and extinguished the flames.

Subsequently, a Wal-Mart employee was burned on the hand while trying to extinguish the flames. On Thursday, August 7th, 2014 at approximately 9:15AM, Wilbur was reported to be in critical condition, but stable at this time by the Parkland Hospital Burn Center.