Police did not say if a weapon was seen or used during the attempted robbery.
Police say witnesses described the suspect as a white male in his mid-30s. The suspect was about 6-feet-0 and weighed between 200 to 220 pounds. The man was wearing a grey beanie cap, dark grey pea coat, blue "acid-washed" jeans and grey sunglasses with oval-shaped frames.
If you have any information about the robbery, contact the police at 925-931-5100.