Up to 15 black teenagers hit a man with a bicycle, then punched and kicked him unconscious in the early hours of Sunday morning in the Cairns suburb of Woree.
The man, 36, had left a local hotel and was walking towards his car when he was directly approached by the gang of youths.
Senior Constable Russell Parker of Cairns Police said the man had been unconscious for about 10 minutes and when he came to, discovered his phone, wallet and car keys had been stolen.
Constable Parker said his car was taken for a joy ride by the indigenous youths but later recovered.
Police have called for public assistance to find the culprits. As previously reported in Cairns News gangs of roaming, largely indigenous criminals have placed a stain on Cairns as a safe tourist destination.
Police have long complained that after putting in hundreds of man hours looking for youthful criminals in the past, their able efforts are normally diffused by the Magistrates Court.
Successive State Governments have watered down punishment for young criminals and the Labor Government shut down boot camps.
Indigenous health advocate, Geoff Guest OAM, told Cairns News he has had outstanding success with youth and adult drug and alcohol rehabilitation over 30 years.
The renowned Petford Farm, west of Dimbulah, has successfully seen more than 3000 patients pass through its gates.
Many former residents of Petford Farm, now the Guest Centre, return after 20 or more years to pay homage to Mr Guest for turning their lives around.
The Guest program, based on horse training and riding, has been acknowledged by health professionals as the best substance abuse rehabilitation course in Australia.
Mr Guest said he has not admitted troubled youth to the program for a number of years, instead concentrating on healthy nutrition for Aboriginal communities, a strategy he believes should prevent the need for extensive rehab programs.
Member for Kennedy, Bob Katter, has called on the State Government to introduce healthy eating programs across the north, particularly at Kowanyama where three children attempt suicide each week.
Mr Guest, aged 90, is a seemingly ageless philanthropist, who has dedicated much of his life to helping others.