Police are appealing for public assistance to help locate missing teenager Cayleb Bromfield.
The 17-year-old left his Sebastopol home on his mountain bike just after 4pm on 30 August.
He has not been seen since and has not been in touch with his family.
Police and family have concerns for Cayleb’s welfare due to a medical condition that requires medication.
Investigators have released a photo of Cayleb in the hope someone may recognise him and be able to provide information on his whereabouts.
Anyone with information is urged to contact Ballarat Police Station on 5336 6000.