William Callaghan: 300 people search Mount Disappointment for boy missing on coldest night of year

Fourteen-year-old with nonverbal autism became separated from family on south side of summit in Victoria

Emergency service crews have spent a freezing night searching the Victorian bush for a 14-year-old boy with nonverbal autism after he became separated from his family on Monday afternoon.

William Callaghan is missing around Mount Disappointment, about 60km north on Melbourne. He was last seen about 2.20pm on the south side of the summit without food or water or appropriate clothing for the cold.