Gainesville police are investigating the Tuesday afternoon armed robbery of Peach State Bank.The suspect “went up to the teller and demanded some cash,” said Cpl. Joe Britte, spokesman for the department. “He then left with an undisclosed amount of cash.”He added, “There was mention of a weapon, but whether he produced it or not, we’re not quite clear just yet.”The suspect left through the rear exit of the bank, which is at West Academy and Washington streets.Nobody was injured in the 1:15 p.m. incident.Bank officials declined to comment.Police cars descended on the bank soon after the robbery was reported, with officers fanning through the area searching for the suspect.One man matching the description was stopped at Jesse Jewell Parkway and West Academy and questioned briefly before he was let go.Also, the K-9 unit “was deployed but was unable to get a successful track,” Britte said.Police described the suspect as a white man in his late 20s or early 30s, about 5 feet 11 and weighing about 175 pounds. He also has sandy blonde hair.At the time of the robbery, he was carrying a black notebook and wearing a red Atlanta Braves hat, baggy blue jeans, a white T-shirt and white latex gloves.Gainesville police are investigating, even though the FBI showed up at the scene, Britte added.No other details were available.Investigators “are still ... putting the pieces together,” Britte said.