A 26-year-old man has been arrested on suspicion of murdering teenage mother-to-be Nikitta Grender.
Gwent Police said the man is from the Newport area.
The 19-year-old was discovered stabbed to death at her burnt out flat in Broadmead Park, Liswerry, Newport, South Wales, on Saturday morning.
Her first-floor flat had been set on fire in an attempt to disguise the killing, police have said.
Officers are at the scene and searches are continuing in and around the estate.
The murder suspect is not from the Broadmead Park or the nearby Moorland Park or Pontfaen areas of Newport.
