Arrest at Atlanta airport after family reports livestreamed threat

A 49-year-old man was arrested Monday at Hartsfield-Jackson Atlanta International Airport after his family alerted police that he was livestreaming plans to carry out a mass shooting, and officers later found an assault-style rifle and ammunition in his truck, Atlanta police said. The suspect, identified as Billy Joe Cagle of Cartersville, Georgia, was taken into custody inside the airport without incident, authorities said.

Police said Cartersville family members contacted their local department after Cagle appeared on a social media livestream describing intent to "shoot it up" at the airport and saying he possessed an assault rifle. Cartersville officers shared the warning and a photo of Cagle with the Atlanta Police Department at about 9:40 a.m. Within roughly 15 minutes, Atlanta officers located and detained him in the domestic terminal, officials said.

A search of Cagle's Chevrolet pickup parked curbside outside the terminal turned up an AR-15-style rifle and 27 rounds of ammunition, Chief Darin Schierbaum said during a news conference. Schierbaum described Cagle as a convicted felon and said federal authorities were working with local police to investigate how he obtained...