An armed bandit held up a convenience store clerk and left the University of Utah-area store with an undetermined amount of cash, police say.

The 24-year-old male clerk was unharmed in the 9:52 p.m. Thursday robbery, said police Lt. Tom Brown.The bandit entered Rainbo Gas, 874 E. 13th South, held a small black revolver on the clerk and demanded money from the till, Brown said. He then told the clerk to lie on the ground outside the gas station while he escaped on foot.