A young man is believed to have been stabbed in the Whale Hill area of Eston, Middlesbrough.
The man aged 24 is believed to have been taken to James Cook Hospital following the incident which occurred on Grosmont Road leading on to Danby Road.
The incident occurred at approximately 10.30pm on Sunday July 20th.
A police cordon is currently in place while a detailed forensic investigation is carried out.
Any witnesses are asked to contact Cleveland Police on 101.