A Wisconsin Amber Alert has been issued for 1-year-old Mateo Mendoza after he was allegedly abducted from the city of Madison, officials say. Anyone with information is urged to call 911 immediately. According to the amber alert, Mateo was forcibly taken by 28-year-old Matthew Stewart, who has threatened to harm both himself and the child. The nature of his relationship to the child was not specified. Stewart is believed to have taken the child in a silver 2007 Chevrolet Impala sedan with Wisconsin license plate 503ZPT. It’s unknown where he might be heading. Stewart is described as a 28-year-…