Gwent Police received a report of a serious assault in Church Street, Trellech, near Monmouth, at around 8.40pm on Saturday 4 December after a man was found unconscious and unresponsive.
Officers attended along with paramedics from the Welsh Ambulance Service who confirmed that a 56-year-old man from the Chepstow area had died. He has been named as Matthew Oubridge.
His family have been informed and are receiving support from specialist officers. They have issued the following tribute to him:
“Matthew was an amazing father, uncle, brother and son, who was tragically taken away too soon.
“He was adored by his family and friends; he had the kindest heart and would always be there for his loved ones.
“He will be sorely missed, and our lives will never be the same again.
“We will cherish the memories we have for the rest of our lives. We, as a family, request that you please respect our privacy at this sad time.”
A 40-year-old man from the Bristol area was arrested on suspicion of murder. He has been released on conditional bail.
Enquiries are ongoing and anyone with information is asked to call Gwent Police on 101 or send us a direct message on Facebook or Twitter, quoting log reference 2100424065.
Officers investigating are also keen to hear from anyone who has CCTV or dashcam footage between 7pm and 9.30pm on Saturday 4 December between Chepstow and Trellech.
You can also contact Crimestoppers anonymously on 0800 555 111 with any details.
The Monmouth neighbourhood policing team will be holding a community street surgery at the Babington Centre in Trellech on Friday 10 December between 10.30am and 12.30pm where members of the public can speak to officers with any concerns.