Four people arrested after the discovery of the body of a 38-year-old man on the outskirts of Norwich prompted a murder investigation have been rebailed.

Police arrested three men in their 40s and one in his 20s after Matthew Griggs' body was found on Church Lane, Sprowston.

Norwich Evening News: Church Lane, SprowstonChurch Lane, Sprowston (Image: Peter Walsh, Newsquest)Detectives believe Mr Griggs had been involved in two separate altercations in Norwich a few days before his body was found, at around 7.45am on September 23 last year.

A murder investigation was launched after a post-mortem examination revealed the former White Woman Lane Middle School and Sprowston High School pupil had received blunt force trauma to his chest.

A spokesman for Norfolk Police said three of the men arrested have been rebailed until June 28 with one man being rebailed until July 12.

Mr Griggs's family have issued a tribute to the son, brother, uncle, nephew and boyfriend who would be "sorely missed by all".

His family said they "still can't believe that he's no longer with us".

They said Mr Griggs, who did not have any children, was born in Norwich in 1985 and lived in Sprowston until the late 1990s when the family moved to Ely.

The Canaries' fan later worked in several pubs, hotels and restaurants across the region.

Norwich Evening News: Church Lane, SprowstonChurch Lane, Sprowston (Image: Peter Walsh, Newsquest)Mr Griggs was found by his partner, who then sought the assistance of dog walkers, who in turn called the ambulance service. 

Police believe Mr Griggs was involved in two altercations before his death with the first in Ketts Hill at about 7.40am on September 19.

The second was just under an hour later, at around 8.30am on Foundry Bridge, in Prince of Wales Road.

Anyone with any information or relevant dashcam footage about either incident is asked to contact Norfolk Police on 101 or email quoting reference 36/68171/23.