MANITOWOC, Wis. (AP) — Police say employees of a Manitowoc business were tied up and ordered into a storeroom by two robbers, one of whom was armed.

The business was robbed about 9 p.m. Sunday. Police have not yet identified the business. Authorities say an undisclosed number of workers had their wrists and ankles bound in a back storeroom. A customer helped free them.

Police say the two male robbers fled with cash and items from the business.