Surveillance video released in Portage Park gas station robbery

CHICAGO (WLS) -- A man and woman robbing a gas station in Chicago's Portage Park neighborhood were caught on surveillance video.

It happened Monday night around 10 p.m. at a Citgo station in the 4200-block of North Milwaukee.

Police say the armed robber demanded money and then tied the clerk up in the back of the store. As that was going on, three customers walked in. They were also tied up.

The clerk and customers are all ok, but the couple got away with money.