A Cleveland Police spokeswoman said the 22-year-old man arrested in connection with the incident has been released on bail.
The injured man remains in an induced coma in hospital, police confirmed.
Officers say they have been searching for all evidence from the scene. It is unclear whether they have found the missing penis.
More top news
Rafa Benitez feels Newcastle United are still pulling together in right direction in the January transfer window.
Bradley was the mascot during Sunday's game between Everton and Manchester City and was handed a signed shirt by Pep Guardiola
A family friend has spoken of the 'huge disappointment' after the scaling back of the investigation in to Claudia Lawrence's death.