The Grantville Police Department said via Facebook that the robbery took place on Friday night. When police arrived at the scene around 8pm, they found the bodies of the owner of the Lock Stock & Barrel Shooting Range, along with his wife and grandson. According to WSB-TV, Grantville police have identified the victims as gun owner Thomas Hawk, 75. his wife, Evelyn, 75. and their grandson, Luke, 17. Police Chief Steve Whitlock said the Hawk family was well known and respected in their small, close-knit community. The Hawks have been operating Lock Stock & Barrel for almost 30 years. Their grandson was on spring break, helping his grandparents shop. “This is just a shock to everyone in the community,” Whitlock told the Associated Press. “We are trying to do our best to understand this.” Whitlock said investigators believe the robbery and shooting happened around 5:30 a.m. Friday, when the area normally closes. He said Hawk’s son, Richard, came from the business and was the person who found the victims. There are no suspects since Saturday morning and no arrests have been made, he said. Investigators said 40 weapons and a range camera were also stolen. The Georgia Bureau of Investigation is investigating, but when contacted Saturday referred all investigations to Grantville police. The Office of Alcohol, Tobacco, Firearms and Explosives was also called due to the volume of weapons received. The three services are trying to combine what may have led to the shooting and find evidence of a possible suspect or suspects. Whitlock said he was grateful for help from other law enforcement agencies in the investigation. “We are just a small town, 12 officers. I have been here for eight years and I have never had to research such a thing. It was a bit difficult for us. “The crime rate is really, very low,” he said. A $ 15,000 reward has been posted for information leading to the arrest and conviction of the killer or killers in the case, according to a Twitter feed from the ATF Atlanta office. “The ATF and our law enforcement partners will work tirelessly to bring the killers to justice,” ATF Atlanta Field Division Special Agent Benjamin P. Gibbons said in a statement. “The barbarity of these senseless killings combined with the fact that these killers have acquired additional firearms make resolving this case our top priority.” Police are asking witnesses to come. Whitlock said they have no video evidence to work on right now. The shooting range is in Coweta County, about 50 miles (about 80 miles) southeast of Atlanta.