WALNUT CREEK -- A busy Walnut Creek yogurt shop was robbed by a gunman early Saturday evening.

No one was injured at the Tutti Frutti Frozen Yogurt shop in the Palos Verdes Mall.

Police said a man walked into the store a few minutes before 6 p.m., brandished a handgun and demanded cash. The employee handed over a small, but undisclosed amount of money, and the suspect left the store on foot toward Geary Road. A short time later a police dog attempted to track the suspect's scent but was unsuccessful.

Police are asking for the public's help in finding the suspect, described as a white man, in his 20s, about 5 foot 9, with a medium build. He was wearing a dark hooded sweatshirt, blue jeans, dark tennis shoes, a gray baseball cap with a black bill and sunglasses.

He was armed with a handgun. Anyone with information should call the Walnut Creek Police Department at 925-943-5844.

Contact Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.