CHICAGO (AP) — Authorities say a man dressed as a Chicago police officer robbed a currency exchange after barging into the store and telling an employee he was armed.

Chicago police say the man entered the store Monday night in the city’s Streeterville neighborhood wearing a Chicago Police Department uniform, including a baseball cap, long-sleeve button-up shirt and reflective vest. He was also wearing a surgical mask.

Police say the man approached a 22-year-old woman who worked at the store, implied that he had a gun and announced that it was a robbery.

The woman gave the robber an unknown amount of cash inside a bag, and the man fled.

Police were searching for the robbery suspect.