After voluntarily attending Sydney's Ryde police station he was arrested and subsequently charged by police.
Police allege that Hayne sexually assaulted a 26-year-old woman on September 30, grand final night, this year at a home in the Hunter region.
This article discusses sexual assault.
Police will also allege as the woman resisted - Hayne bit her so savagely, she bled profusely - was sent to hospital, requiring surgery - and there are photos of her injuries.
Police declined to charge Hayne after investigating the allegations but the woman lodged a civil suit.
Officials say the accuser is a 26-year-old woman who claimed she hooked up with Hayne on September 30 in what started as a consensual sexual encounter.
A professional sporting career and life of freedom have both come to an end for Jarryd Hayne, and it's because of his own despicable actions.
But his dream ended after one season with the San Francisco 49ers.
Hayne is also now fighting a civil case in the U.S., accused of raping a woman in December 2015, while playing National Football League with the San Francisco 49ers.
A two-time Dally M Medallist, Hayne is one of the biggest names in the NRL thanks largely to his magical run to help Parramatta to the 2009 grand final.
He was placed under arrest and charged with a single count of "aggravated sexual assault - cause actually bodily harm to victim", an offence which carries a maximum of 20 years jail.
Hayne has played 11 Tests for Australia, helping them to win the 2013 World Cup, but has also represented Fiji, where his father hails from.
He has vehemently denied those allegations.