Man eating Whataburger shoots armed robber

Two armed robbers picked the wrong victim in northwest Dallas.

Police said they approached a man eating his dinner in the parking lot of Whataburger at Inwood Road and Lemmon Avenue and tried to rob him around 1 a.m.Thursday morning.

The man was an off-duty, but armed security guard. He shot and killed one of the robbers. The other ran away.

Police have since detained a man who is possibly the second suspect. He is being questioned by investigators.

The dead suspect's identity has not yet been released. Police said he did have a pistol.