A convicted rapist has admitted he sexually assaulted a seven-year-old girl he’d choked and detained in a Sydney dance studio bathroom.

Anthony Peter Sampieri, 55, on Thursday pleaded guilty to three counts of child rape and seven other charges in Sydney’s central local court after the attack in a Kogarah dance studio bathroom in November 2018.

It later emerged Sampieri had been out on parole after raping a woman years earlier.

As a result of the guilty pleas, five charges relating to alleged assaults and using a child to make child abuse material were withdrawn.

A bearded Sampieri appeared via video link as his lawyer, Penny Musgrave, entered the pleas on his behalf.

The court heard some facts were still in dispute despite the guilty pleas.

Sampieri was committed to Downing centre district court for sentence on 21 June when he’s again due to appear via video link.

He also faces 29 charges of making threatening phone calls in the weeks before the dance studio attack.

He’s due to appear before Central local court on 10 July on those matters.

A police officer is separately facing charges of neglecting his duty for allegedly mishandling a complaint about Sampieri, who was on parole at the time, in early November.

Leading senior constable Andrew Michael Bruce has pleaded not guilty to all four charges and is currently suspended with pay.