Investigators say crews were prepping for an event in Upshur County when a huge fire broke out at about 10:30 a.m.
The men are seen pouring what appears to be gasoline from containers onto the deck of the bar.
In an exclusive interview with ABC13, the owner of the bar, where an explosion occurred Friday, speaks out for the first time.
Neighbors near the bar told ABC13 the power went out immediately after the explosion, many are now left with shattered windows.
The family's attorney said the roof of Gilberto Mendoza Cruz's home collapsed on him during the explosion at Watson Grinding.
The powerful blast that killed Frank Flores and a co-worker also damaged 450 nearby homes and businesses.