New details continue to emerge over an alleged sexual assault committed by NRL player Jarryd Hayne, including that he bit the female victim on her genital area, causing severe bleeding that required her to seek medical attention.

It can also be revealed that - in the early hours of the morning, after the alleged incident in the Hunter region - Hayne was back in Sydney's western suburbs drinking with another NRL player.

Jarryd Hayne has been charged by police. Credit:SMH

The revelations come two days after Hayne handed himself in to police, who charged him with aggravated sexual assault.

Police will allege the former Parramatta Eels fullback was intoxicated when he went to the house north of Newcastle, which the woman shared with her mother, on the Sunday night of the NRL grand final. The woman's mother was at home at the time of the alleged incident.