A former underworld figure has offered to lead detectives to the location of ten buried bodies because he doesn't want to take the secrets to his grave.

Charlie Quinlan has revealed he wants immunity in return for the secrets he has kept for the last 15 years.

The 55-year-old told 7 News he would give police the 'exact location' of 10 bodies including Sidney Collins - notorious Outlaws Motorcycle Club boss who was murdered by Mark 'Chopper' Read in 2002.

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Former underworld figure Charlie Quinlan (pictured) has offered to lead detectives to 10 bodies because he doesn't want to take the secrets to his grave

The dying former underworld figure said it would be a relief for him because the deadly secrets had been eating at him for years.

'The families are the main ones but it'd be a big relief for me,' he said from a hospital bed.

Quinlan, who remained silent on any involvement in the killings, told the network Collins was buried at Tabulam, north of New South Wales, while the other nine bodies were near Crookwell, near Wollongong.

Two retired police officers are believed to be among the 10 buried bodies.

The 55-year-old, who is believed to have strong ties with notorious criminals, said he wanted immunity from prosecution as well as a letter of assistance for his brother and another man in jail.

Chopper Read claimed in a final interview before his death in 2013 with 60 Minutes that he murdered Collins after the former bikie told on him to police for shooting him 'in the guts'.

Mark 'Chopper' Read (left) claimed to kill Sidney Collins (right) in 2002 and Quinlan now claims Collins is buried in Tabulam while the other nine bodies are near Crookwell, NSW

Read claimed he caught up with Collins, who is believed to have had a business called Russian Angels and had a wife who lived in Russia, at a casino before turning the gun on him.

'I hopped in his car, going back to his place, bang, bang, bang. I shot him the last time with his gun,' Read claimed.

Despite Quinlan claiming to know the exact spot Collins was buried in 2002, no deal has yet been made between detectives and the former underworld figure.