South Wales Police says its investigation into the circumstance surrounding Tegwen Roderick's death is ongoing and a postmortem is being carried out.
A police spokesman said she suffered 'serious injuries' which are currently 'unexplained.' He added: "At this stage there is no confirmed link between the injuries and her death"
Four people are assisting officers with their enquiries.
Allison Williams, chief executive of Cwm Taf University Health Board, says she recognises there is public concern over the ongoing investigation. She says the health board will work with police to "get to the bottom of what happened."
Cwm Taf University Health Board takes the care and safety of its patients extremely seriously. As soon as staff identified that there was a problem with the patient concerned, they acted quickly and appropriately. We are continuing to work with the police to do everything we can to get to the bottom of what happened.
We would like to emphasise that there is no suggestion that any other patients have been affected.
She added that anyone with concerns about the care of their relatives are encouraged to talk to ward staff who can arrange for them to speak with a senior member of the health board.
Cwm Taf Community Health Council says it welcomes the health board's 'prompt action.' Dr Paul Worthington, the council's chief officer, said he has spoken to the health board and been reassured that the delivery of services was unaffected.
We are aware of the fact that an unexplained injury was sustained by a patient at Ysbyty Cwm Cynon. This is clearly a very serious issue and our thoughts and sincere condolences go to the family at this very sad time.
We welcome the prompt action by the health board in initiating the multi-agency review process to consider what happened. This swift response was both right and essential.
We are aware that staff are being interviewed as part of the ongoing process of investigation into the incident, and it would not be appropriate to comment in detail until that investigation is completed.
An elderly woman, who died after sustaining an 'unexplained and serious injury' in hospital, has been named locally as Tegwen Roderick.
The 88 year old, from Abercanaid in Merthyr Tydfil, died at the town's Prince Charles Hospital yesterday.
Ten members of staff have since been suspended and police are investigating.
Ten members of staff have been suspended after the death of an elderly woman.
The 88-year-old woman died at Prince Charles Hospital in Merthyr Tydfil today after suffering an "unexplained and serious injury" at Ysbyty Cwm Cynon in Mountain Ash last Thursday.
Cwm Taf University Health Board say the staff were on duty the night before and the morning after the injuries were sustained. It added the suspensions are a "precautionary measure".
South Wales Police say they are investigating and four people are assisting officers with their enquiries.
A spokesperson for Cwm Taf University Health Board said:
'On Thursday morning, as part of routine patient care, a patient at Ysbyty Cwm Cynon was identified as having an unexplained injury.
'Appropriate arrangements were made for transfer to Prince Charles Hospital in Merthyr Tydfil. As is always the case in such a situation, the Health Board initiated a multi-agency strategy meeting to be held to consider the circumstances. This took place the following day.
'Staff on duty at the time are in the process of being interviewed to assist the investigation and the family have been kept fully informed of the situation.'
The health board added it has not made any link between the patient's injuries and her death.
A post-mortem is due to take place tomorrow.
An unusual new video put together by local businesses in Merthyr Tydfil to promote the town to visitors has been watched by more than 40,000 people online in just three days.
It stars 'Clive the Drive', and a load of his bus passengers, who get involved in a good old singalong when they are whisked off to Merthyr.
The A465 Heads Of The Valleys Road is closed in both directions after an accident between the A470 Ffrwd Road (Cefn Coed Roundabout) and Lower Vaynor Road.
The Economy Minister has described news of an expansion in Merthyr Tydfil as 'an extremely important investment for Wales', adding that the location beat off stiff competition from a number of other sites in Europe.
It will provide a substantial boost to the local economy, creating more than 220 new skilled jobs in one of our priority economic sectors, offering a range of employment opportunities for local people.
The company's decision sends out a strong and clear message that Wales offers a first class environment for industry investment and that the Welsh Government is committed to supporting business growth. This multi-million pound investment will also help secure the firm’s longer term future in Wales and create additional economic benefits for local businesses.
More than 200 jobs are set to be created at a new manufacturing facility in Merthyr Tydfil.
Vehicle exhaust systems firm Tenneco-Walker has announced it is expanding to High Point at Dowlais Top, creating 224 jobs and maintaining a further 36.
The company already has a base in Tredegar, employing around 190 people.
The investment, described by Economy Minister Edwina Hart as a 'major project for Wales', has been supported by the Welsh Government.
Police have thanked the Troedyrhiw community for their co-operation during an investigation into the deaths of Joanne Thomas and her four-month-old baby Harper.
An open verdict was recorded today at inquest.
This verdict brings what has been an extremely thorough police investigation into the circumstances surrounding the deaths of both Joanne and her baby to a conclusion.
I would like to thank the community for their co-operation during what were very tragic circumstances.
Our thoughts, as always remain with the family at this very difficult time.