Thieves broke into five patrol vehicles from different Alabama law enforcement agencies overnight, making off with guns and a bulletproof vest. Etowah County sheriff's spokeswoman Natalie Barton says the break-ins occurred between midnight and 6 a.m. today. She says the thieves absconded with multiple AR15 assault weapons and one bulletproof vest. Weapons were taken from patrol cars belonging to the Etowah County Sheriff's Office, Sardis City Police Department, Gadsden Police Department and Calhoun County Sheriff's Office.Barton says each of the cars had a window smashed in. Authorities believe the break-ins are related. Police have no leads on who broke into the patrol vehicles. The FBI and Bureau of Alcohol, Tobacco, Firearms and Explosives will be involved in the investigation.