At 3.02 hours today (Friday, January 27) following information from the Fire Service, South Wales Police attended a house fire at Cefn Bychan, Pentyrch, Cardiff.
One person sustained fatal injuries and an 18-year-old male has been arrested on suspicion of murder.
An incident room has been set up at Cardiff Central Police Station and an investigation is on-going.
No further information regarding the identity of the deceased is available at this time.
Any witnesses or anyone with information is asked to contact South Wales Police on 101 or Crimestoppers on 0800 555 111.