Investigators say Giovanni Vantaggiato confessed to the attack while under questioning . The bombing killed a teenage girl and injured five other people . Just after the blast , police found three gas cylinders at the site that were detonated with a remote control , authorities said . TL;DR A man was arrested in connection with an explosion that rocked a suburban Philadelphia neighborhood on Saturday morning.
Investigators say Giovanni Vantaggiato confessed to the attack while under questioning . The bombing killed a teenage girl and injured five other people . TL;DR A man was arrested in connection with an explosion that rocked a suburban Philadelphia neighborhood on Saturday morning.