UPDATE: Lex has been found. He’s being treated for cold exposure.

Police are continuing their search for missing 13-year-old Lex.

The boy was last seen walking in Wyndham Vale near Kakadu Drive at about 12.40pm on Monday.

He was wearing a camoflauge top and pants and socks without shoes.

There are concerns for his welfare due to his age, a medical condition and the cold weather he’s been missing in.

Local police, SES and Air Wing and the Mounted Branch are currently searching parkland near the Werribee River on Hobbs Road in Wyndham Vale.

Anyone with information on Lex’s whereabouts is urged to contact Werribee Police Station on 9742 9444.

Press PLAY below for more details from police