Police are treating the deaths of an adult and child in Merthyr Tydfil as unexplained.
The bodies, believed to be those of a woman and child, were found at a house in Church Street, Troedyrhiw, at around 4.20pm on Wednesday.
South Wales Police says next of kin have been informed and post mortem examinations are being arranged. An incident room has been set up at Cardiff Central Police Station.
Detectives are investigating the circumstances leading up to the discovery of the bodies yesterday afternoon. Anyone with information is asked to call 101 or Crimestoppers anonymously on 0800 555111.
Borough councillor Gareth Lewis says news that an adult and child have been found dead in Merthyr Tydfil will have a 'big impact' on people locally.
Police were called to an address in Church Street in the village of Troedyrhiw at 4.20pm this afternoon.
Troedyrhiw is part of an old coal-mining area, which Mr Lewis described as a 'typical, traditional Valleys community'.
An adult and a child have been found dead at a property in the Troedyrhiw area of Merthyr Tydfil, South Wales Police have confirmed.
Police were called to the Church Street address at 4.20pm this afternoon.
Officers are currently at the scene, which has been cordoned off, while house-to-house enquiries are being carried out in the area.
The A4054 Cardiff Road has reopened after an accident between the B4285 Bridge Street (Troedyrhiw) and Wesley Place (Merthyr Vale).