Rapids police are looking for a suspect in a robbery of a Subway restaurant Saturday night.  Police said about 9pm a woman wearing all black with a black ski mask, approximately 5-foot 3-inches tall with brown hair and brown eyes attempted an armed robbery at the Subway at 3810 8th Street South in the City of Wisconsin Rapids.  The suspect entered the store carrying a knife with a yellow handle and a suspected fake gun with a brown handle.  When the employees did not meet the woman’s demands, she fled north on 8th Street.  Anyone with information regarding this incidents should contact the Wisconsin Rapids Police Department at 715-423-4444 or 9-1-1.