A murder investigation has been launched after a 56-year-old has died near Monmouth.
Gwent Police said they were called to a 'serious assault' in Church Road in Trellech at around 8.40pm on Saturday after a man was found "unconscious and unresponsive."
It said officers attended along with paramedics from the Welsh Ambulance Service who confirmed the man had died.
A 40-year-old man is currently in police custody after he was arrested on suspicion of murder.
Officers remain at the scene as enquiries continue.
Anyone with information is asked to call 101.