Authorities are investigating a tragedy in Westchester County. A missing 3-year-old boy was found dead in the Mamroneck River after a brief search Thursday afternoon, police say. Cops were notified around 2:30 p.m. about a missing boy who had left home. They say the child’s 54-year-old uncle and 85-year-old grandfather called authorities after they couldn’t find him. Officers canvassed the area and found the boy in the river near the Hillside Avenue Bridge. He was pronounced dead at the scene.
