GRAND RAPIDS (WKZO) -- Cops in Grand Rapids are on the hunt for a pair of masked robbers who locked the employees of a Burger King in a cooler and raided the cash register.

The incident took place early this morning at the restaurant on Pearl St. NW near Grand Valley State University's downtown campus.  The employees weren't hurt and managed to escape the cooler after the thieves took off.

Investigators are looking for two black males.