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.
It is a very close-knit community, the people are very nice and will help the police as much as possible with their inquiry.
The information started to spread online, and it will have a big impact on this community and its people.
Troedyrhiw is part of an old coal-mining area, which Mr Lewis described as a 'typical, traditional Valleys community'.
Joanne Thomas and her four-month-old baby Harper were found dead at their home in Merthyr Tydfil in July. An open verdict has been recorded.
Police add there is 'no evidence to date' to suggest carbon monoxide killed the two, believed to be a mother and her four-month-old baby.