Police are appealing for public assistance to locate a missing teenage boy from the Northern Beaches area.

Jai Walsh, aged 15, was last seen about 12pm at a home on Alfred Road, Brookvale on 21 August 2024.

When he could not be located or contacted, officers attached to Northern Beaches Police Area Command were notified and commenced inquiries into his whereabouts.

Police and family hold serious concerns for his welfare due to his age.

Jai is described as being of Caucasian appearance, about 175cm-180cm tall with a thin build.

He was last seen wearing a black hooded jumper and grey track pants.

Jai is known to frequent North Narrabeen and Dee Why areas along with Warringah Mall in Brookvale.

Anyone with information into his whereabouts is urged to call Dee Why Police Station or Crime Stoppers on 1800 333 000.