Police are currently searching for and appealing for public assistance as they search for missing Albanvale boy Harrison.
The 13-year-old was last seen on Mulhall Drive in St Albans on 26 July about 3pm.
Police and family have concerns for his welfare due to his age, a medical condition and his disappearance being out of character.
He is described as being about 150cm tall, with a medium build and short black hair.
Harrison was last seen wearing a black hooded jumper, black tracksuit pants and a black school bag.
His lack of clothing and shelter have caused further concern due to the weather conditions overnight.
Officers have been told Harrison is familiar with the Brimbank Plaza and Watergardens Shopping Centre areas.
Investigators have released an image of Harrison in the hope that someone can provide information on his current whereabouts.
Anyone with information on his whereabouts is urged to contact Sunshine Police Station on 03 9313 3333.
