An Aboriginal liaison officer has told a parliamentary inquiry into the February riot at Redfern in inner Sydney that he has received death threats from the police to warn him off giving evidence.

Two Aboriginal liaison officers have told the inquiry that they warned senior police that trouble was brewing the day before the riot broke out.

An internal police report, known as the Coburn report, found police did not receive enough warning.

Derek Wilson says he told Inspector Bob Emery that locals in the Block area were angry about the death of teenager TJ Hickey.

Mr Wilson says he warned that police should stay away.

His fellow liaison officer, Paul Wilkinson, dropped a bombshell.

He claimed a police report into the riot was a cover up, and TJ Hickey had been "rammed" by police.

"I've had me house burnt down as a result of the crap that's gone on, I've had death threats stating to stay away from this inquiry," he said.

"And you may ask who from? The police."