Four girls killed by shotgun wounds to the head: On Friday night the house at number 108 was the scene of the brutal murder of four girls, one of whom merely answered a knock unaware that death awaited on the other side of the front door. The murder of Lexie Mac-Gregor, 16, her twin sisters Kirsty and Jennifer, 19, and friend Lisa Chatterton, 19, occurred between 9.30 pm and 9.40 pm. Each was shot in the head by a 12-gauge shotgun. Richard Henry Lawson Maddrell, 27, unemployed, was arrested at his grandmother's house at North Cremorne at 7.35 pm on Saturday. Maddrell was later charged with four counts of murder.