Detectives investigating the discovery of a man found badly injured in Sudbury do not believe anyone else was involved in the incident.

A man in his 30s was found seriously injured after being found lying unconscious near Sudbury Community Hub on Chilton Industrial Estate, in Northern Road, at 6.10am on Wednesday, May 15.

READ MORE: Mystery of man found injured in Sudbury

He was taken to Addenbrooke's Hospital in Cambridge, where he remains in a serious but stable condition.

He is white, medium build, with very short receding dark hair, and a full dark beard.

He was wearing a white t-shirt, black skinny jeans and black Adidas trainers.

On Friday, May 17 detectives confirmed that no third parties are being sought in connection with the incident.