She saw her son on the news. And realised he was the sex attacker police were looking for.

What would you have done?

When Steven Rundall’s mother was watching a news report about a wanted sex attacker earlier this year, she did not expect to see her own son as the suspect in the CCTV footage from Sydney’s Kings Cross. But she did.

NSW Police released CCTV footage of a man in April they suspected of committing a sexual assault in January 2014 — and when Steven’s mother saw it she knew exactly what to do.

She called her son and told him to call the police and hand himself in. He took her advice and admitted to the offence which took place in King’s Cross  on January 20, 2014.

Randall appeared before a court on Tuesday and pleaded not guilty to a charge of sexual intercourse without consent and pleaded guilty to a charge of indecent assault, the Sydney Morning Herald reported.

A statement of the facts before the New South Wales District Court described the details of the incident.

Rundall, 37, of Roseville, reportedly first talked to his victim, a young woman, in a Pie Face store, learning she lived in Double Bay where he told her he had friends living, the Herald reported.

She left but as she was walking home he approached her again and then hugged her tightly.

She tried to free herself and he reached between her legs and groped her, the Sydney Morning Herald reports.

Just days later he committed another sexual assault and was sentenced to an intensive corrections order and warned that he could face jail when he is sentenced for the Kings Cross assault in March next year.