Police are investigating the deaths of four people, including three children, at the Queen Elizabeth University Hospital (QUEH), it has emerged.
The Crown Office and Procurator Fiscal Service (COPFS), which has a duty to investigate all sudden, unexpected, and unexplained deaths, has instructed officers from Police Scotland to look into the flagship hospital in Glasgow.
The deaths of a 73-year-old woman and three children are being investigated, and although inquiries are still in early stages, they could lead to a fatal accident inquiry or criminal charges.
One of the fatalities being investigated by officers is of Milly Main, who died in 2017, after contracting an infection found in water.
She was being treated at the Royal Hospital for Children at the time, which is part of the same campus as the QEUH.
Her mother, Kimberley Darroch, was speaking to an inquiry exploring issues with the construction of the Glasgow hospital campus and the Royal Hospital for Children and Young People in Edinburgh earlier this week.
She told the Scottish Hospitals Inquiry that she believes what happened to her daughter is "murder".
"My view is that the hospital should be closed. I don't think it's safe," she said.
"I feel like the health board needs to be punished for all of this."
A spokesman for the COPFS said an investigation is ongoing and "families will continue to be kept updated in relation to any significant developments".
"The Crown Office and Procurator Fiscal Service is committed to supporting the work of the Scottish Hospitals Inquiry and contributing positively and constructively to that work," the spokesman added.
A Police Scotland spokesperson said: "COPFS has asked Police Scotland to investigate a number of deaths at Queen Elizabeth University Hospital campus, Glasgow.
"Our investigation is at a very early stage, it would be inappropriate to comment further."