Police investigating armed robbery in northeast Sioux Falls

SIOUX FALLS, S.D. (KSFY) - Sioux Falls Police responded to a robbery at Casey's General Store at about 5:30 a.m. in the area of East Rice Street and North Jessica Avenue.

A lone subject wearing dark clothing and a Halloween mask entered the store, pulled out a knife, and demanded money.

The subject ran away with an undisclosed amount of cash.

No one was injured in the incident.