Baton Rouge fire investigators are working to determine how a wall inside a convenience store on Thomas Road caught fire Monday morning.

Firefighters arrived at the Stop-and-Go at 2650 Thomas Road at 11:24 a.m. and found the fire behind the front counter of the store, Baton Rouge Fire Department spokesman Curt Monte said.

The fire was extinguished at 11:33 a.m., but not before the wall behind the counter and merchandise on it, including cigarettes and liquor, went up in smoke. Most of the items in the store were also destroyed.

“A lot of the merchandise melted just from the heat,” Monte said.

Monte said firefighters cut the electricity to the store, so a lot of the items inside the coolers may be ruined, bringing the loss to about $130,000, including $100,000 in merchandise.

Monte said firefighters found the point of origin for the fire, but still don’t know what caused it.