Mystery still surrounds the death of a mum and her baby, who were found together at their home last week.
Post-mortem examinations have failed to find out how Joanne Thomas, 27, and her four-month-old daughter, Harper, died at their home in Merthyr Tydfil.
Their bodies were discovered at the house on Church Street, Troedyrhiw, on Wednesday, July 3.
South Wales Police previously said there was no evidence which suggests carbon monoxide poisoning was a factor and the deaths are not being treated as suspicious.
A police statement released today said: “Post-mortem examinations carried out to establish how they [Joanne and Harper] died have proved inconclusive so far, and officers are awaiting the results of further tests.
“But there do not appear to be any suspicious circumstances.
“A file of evidence is now being prepared for the Coroner.
“Officers piecing together Joanne’s last movements still want to hear from anybody who thinks they may have seen her in the weeks leading up to Wednesday, July 3.
“Specially trained officers continue to provide support to the family at this difficult time.”
In a statement released on Friday, Joanne Thomas’ family described her as “a bubbly, sociable and kind-hearted person”, adding that she was “a loving and caring mother to her children”.
The statement added: “Joanne and baby Harper will be sorely missed by all her family and friends.”
It’s believed Joanne and Harper may have been dead for some time before their bodies were discovered.
Scores of tributes are still being posted on the R.I.P Joanne Thomas Baby Facebook group.
Investigators are still appealing for information and an incident room has been set up at Cardiff Central Police Station.
Detective Superintendent Paul Hurley said last week: “I’d like to thank the local community for their co-operation so far and my appeal to them continues. We are still keen to hear from anyone who may have seen Joanne and baby Harper in the past few weeks to come forward.
“The family have released a picture of Joanne so that may help people recall seeing her.”
He added: “Our thoughts are with Joanne’s family.”
Anyone with information is asked to contact the incident room on 02920 527303, South Wales Police’s 101 number or Crimestoppers on 0800 555 111.