ST. LOUIS COUNTY • Prosecutors charged Rachel Iliff, 36, on Tuesday with first-degree robbery for a holdup about 1:15 a.m. Dec. 8 at a convenience store in Affton.

St. Louis County police said she paid for gas at the 7-Eleven store at 8000 Mackenzie Road, left, then returned with a silver handgun and told a cashier: "Give me the register or I’ll shoot you in the leg.” The employee handed over all the $1 and $5 bills and the woman fled.

Police said they tracked Iliff by a vehicle license number and the recollection of a witness near the store at about that time, who said they talked and that the suspect had made note of the fact the clerk was alone. Officials said Iliff confessed and said she used either an antique, toy or replica gun she found in her car's trunk.

Iliff, of the 3100 block of Lupine Drive in Arnold, was held in lieu of $50,000 cash bail.