Search for missing Qld father and son

Police are appealing for help to locate a father and son from Brisbane who were last seen in northern NSW four days ago.

The pair were last spotted in Lismore on June 13, however it's unknown if they are still in the northern NSW area or if they have returned to Brisbane.

Family last saw the 56-year-old father and his eight-year-old son at the Mount Gravatt on June 9 but have not heard from them since.

Police are urging anyone with information to come forward.