A 26-year-old woman allegedly sexually assaulted by Jarryd Hayne was forced to seek medical attention the following day, after she suffered bite wounds so severe she was left bleeding profusely, police have confirmed.

The explosive new details were revealed by Seven News on Tuesday evening, and included graphic descriptions of the alleged assault on the young woman at a home north of Newcastle on night of the NRL grand final earlier this year.

Hayne has since been charged with aggravated sexual assault.

A police source has confirmed to the Herald that the young woman was at a home where she lived with her mother, when Hayne arrived in a taxi, allegedly intoxicated after a session of drinking.