A crook escaped with hundreds of dollars in cash after robbing a Rosenberg convenience store, according to police.

Rosenberg police said it happened at a Time Mart store at an Exxon station on FM 2977 near Winding Lakes around 9:30 p.m. Tuesday. 

Police said the suspect was wearing a black sweatshirt, black pants and a black scarf over his face when he entered the store with a gun.

The suspect demanded cash from the clerk, police said, and after getting the money, ran away. Officials said he got away with about $500 to $700.

So far no arrests have been made.