Walnut Creek police say a man walked into the NorCal Swim Shop at 2054 Treat Blvd. Friday, brandished a knife and demanded money from an employee.
The suspect, described as a white male adult in his 20s with a small build, black hooded sweatshirt, blue jeans, white shoes and sunglasses, entered the store at 5:30 p.m.
Investigators said the suspect then fled from the business in an unknown direction with an undisclosed amount of cash. The employee who was robbed was not injured.
Anyone with any information in this regard is asked to call the Walnut Creek Police Department at (925) 943-5844.