Police have issued an appeal for information to help find a missing teenager who could be in Newcastle.

13-year-old Tadgh Kelly was last seen at a shopping centre in Forster at about 4.30pm on Thursday.

Police believe he may have travelled to Newcastle or Sydney on public transport.

Tadgh is described as being of Caucasian appearance with a slim build, about 160cm tall with short blonde hair.

He was last seen wearing a black Nike cap, black shirt with a Tommy Hilfiger label, black shorts and grey joggers.

Anyone with information is urged to contact Crime Stoppers. 

Missing teen Tadgh Kelly