Veteran broadcaster Gary O'Callaghan dies aged 83

Veteran Sydney broadcaster Gary O'Callaghan has died at the age of 83, according to reports.

Sydney radio station 2GB announced Mr O'Callaghan's death on Saturday morning, prompting tributes on social media.

He worked for 2UE for almost fifty years, between 1956 and 2003, and after that on 2SM.

He was well known for his long running and ratings winning breakfast show on 2UE, and earlier in his career for his coverage of the Petrov Affair in the 1950s.

"Saddened to hear of passing of the great Gary O'Callaghan. Loved listening to him & Sammy Sparrow & honoured to be on air with him at 2UE," 4BC Brisbane operations manager Mark Braybrook said on Twitter.