CHICAGO (CBS) — A man wearing a surgical mask robbed a store early Tuesday in northwest suburban Park Ridge.

A man entered the store near Oakton Street and Northwest Highway about 4:30 a.m., approached the counter and asked for money, according to Park Ridge police. He implied he was armed but no weapon was displayed.

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The clerk complied with his demands, and the suspect ran away with an unknown amount of money, police said.

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He was described as a white man about 25 and 5-foot-8, police said. He was wearing a black jacket, beige pants, gray stocking hat and white mask.

Anyone with information should call Park Ridge police at (847) 318-5252.

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(Source: Sun-Times Media Wire © Chicago Sun-Times 2016. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)