Police in Walnut Creek are looking for two men who robbed a bank at gunpoint Thursday morning.Officers responded to a report of a robbery at Pacific National Bank at 1910 Tice Valley Road at around 10:15 a.m., according to the Walnut Creek Police Department.Two suspects, both described as men in their mid-to-late 20s, entered the bank and demanded money from the tellers, according to police. One of the men was carrying a handgun. The tellers complied, and the suspects took off toward Rolling Hills Drive with an undisclosed amount of cash from two tellers. An extensive search by responding police that included a K-9 unit and a California Highway Patrol helicopter failed to locate the robbers.One of the suspects was described as being around 6 feet tall and weighing 165 pounds. He was wearing a California Golden Bears dark hoodie, dark pants and a black handkerchief over his face.The second was around 5 feet 5 inches tall and weighed around 150 pounds. He was wearing a dark camouflage hoodie and a black handkerchief over his nose and mouth. Anyone with information regarding the robbery is asked to contact the Walnut Creek Police Department at (925) 943-5844.