A gun-toting male — only 17 years old — held up a Chicago restaurant Monday night, police said. But also in the establishment was a concealed-carrying man who took issue with what was happening and opened fire on the suspect.

Police said the teen entered the Taco Burrito King at 5413 W. Belmont Ave. off Long Avenue in the Belmont Cragin neighborhood — and at gunpoint, demanded the contents of the cash register, WBBM-TV reported.

Read more…