A man who says he was bashed by police on the New South Wales north coast has told an inquiry that officers made sexually degrading gestures behind his mother's back.
Corey Barker is being questioned at the Police Integrity Commission (PIC), which is holding an inquiry into his arrest and prosecution at Ballina in January 2011.
The 23-year-old Indigenous man was charged with a string of offences, including assaulting police.
But last year a court dismissed the charges against him, finding it was likely the officers who bashed him lied about it under oath and colluded to have him jailed.
Mr Barker says he was arrested as he was trying to film the violent detention of two friends on his mobile phone.
Police records do not make any mention of a phone in his possession on the night of the incident.
However, the PIC has been shown footage that appears to show officers holding a phone and questioning Mr Barker.
He has told the commission that police dragged him from his cell and bashed him at the back of the station, where there were no cameras.
He alleges officers kicked him in the head and torso until he was unconscious.
Mr Barker also told the commission that officers made sexually degrading gestures behind his mother's back when she went to visit him in lockup on the night of the incident.
The inquiry continues.