Police are appealing for a man to come forward to help with their enquiries following an assault in Glossop.
On Sunday, July 15 at around 3.40am, a 37-year-old man was assaulted on High Street East. He suffered serious injuries and was taken to Tameside Hospital where his condition is described as critical.
Police would like to trace a man who intervened in the assault as it is believed he will have information vital to the enquiry.
He is described as white, 5ft 1ins tall, of a muscular build with a shaved head. He was wearing a light coloured short-sleeved shirt and dark coloured trousers. He was last seen walking towards the town centre.
A 31-year-old man has been arrested in connection with the assault and remains in police custody. A 29-year-old old man has been released on police bail pending further enquiries.
A 22-year-old old woman and a 26-year-old man have been arrested on suspicion of perverting the course of justice and are being questioned by police.
Anyone with information is asked to contact Glossop CID using the non-emergency number 101. To report crime anonymously call Crimestoppers on 0800 555 111.