A missing teenager last seen in Bell Post hill could be heading to Adelaide.
Isaiah was seen on Creamery Road around 11.30am Monday.
Police believe the 13-year-old could be using public transport to get to South Australia.
He is described as having a thin build, olive skin and black hair.
Anyone who may have seen Isaiah or knows where he is is being urged to call Geelong Police Station on 5225 3100.