GRETNA, Neb. -- A Sarpy County man is facing charges after an armed robbery in Gretna. 

The Sarpy County Sheriff's Office says the robbery happened Tuesday night at the McKinney's Food Center. 

Authorities say a man went into the store, approached a Clerk and demanded money with a gun. 

They say at some point during the robbery, a shot was fired into the ceiling. 

They man then ran from the store but was later arrested. 

The Sheriff's Office says 19-year-old Thunder Carrillo was arrested for robbery, criminal mischief, terroristic threats and weapons charges.