The owner of a bar in Central Florida shot and killed his co-owner before shooting himself late Friday night -- while patrons were inside, according to the Orange County Sheriff’s Office.

Deputies said they went to the Mezcal Bar in Orange County around 11:10 p.m. after receiving a call of shots fired in the bar.

Lida Calderon, 45, was found shot and Julio Macias-Flores, 45, had shot himself, deputies said.

Firefighters arrived and pronounced both dead at the scene, according to deputies.

Patrons were inside the bar at the time of the murder-suicide, deputies said.

Witnesses told deputies Calderon and Macias-Flores were arguing with each other prior to the shooting.