Concealed handgun permit holder comes to the rescue and stops four people from robbing a man

From WDAZ Channel 8 TV (ABC) in Fargo, North Dakota:

A passer-by with a handgun stopped four people from assaulting and robbing a 36-year-old man Monday afternoon in downtown, according to Fargo police. 

.Lt. Joel Vettel said one of the four knew the victim and lured him behind a building in the 900 block of NP Avenue. There, the man was assaulted, knocked unconscious and robbed of his wallet, Vettel said. 

Police were dispatched to the scene about 12:10 p.m. and learned that the passer-by, who has a license to carry a concealed weapon, brandished his gun to end the robbery, Vettel said. 

All four of the alleged robbers were being held Monday evening at the Cass County Jail. . . .