A 21-year-old man has been found dead at a house on Moriah Street, Rhymney.
Emergency services were called at around 12.50am on Sunday, September 15.
Gwent Police is currently treating the death as unexplained.
The man’s family has been informed and a postmortem is set to be carried out.
Police say the case has been referred to the Independent Office for Police Conduct (IOPC).
Anyone with information can contact Gwent Police on 101, quoting reference 1900340602.
Gwent Police can also be reached through Facebook and Twitter.