WATCH: Coroner's report calls toddlers death at Sainte-Justine avoidable

A pair of new coroner reports is calling the deaths of two young children at Sainte-Justine Hospital accidental, but avoidable.

On December 16, 2016, 23-month-old Ghali Chorfi was being treated for cancer. His treatment called for a potassium injection followed by a saline injection to rinse out the vein.

According to Dr. Jacques Ramsay's report, after the first shot of potassium Ghali was given a second dose instead of the saline, sending him into cardiac arrest.

Hospital staff tried to resuscitate him and he was given treatment to reduce the potassium level in system, but the boy died later that night.

Ramsay said the only likely scenario for Ghali's death was that a nurse gave him the wrong shot.

Ghali's mother Hadil El Amrani, currently in Morocco, told CTV Montreal she was relieved to finally get the coroner's report backing up what she has suspected for nearly a year and a half.

"I'm trying to fight for my son. I really don't know what to do. I will be back to Montreal soon to see my lawyer, to have some news from the hospital, to have answers to my questions. I feel really, really bad. It takes too long - 16 months - to have answers," said El Amrani.

In the second case, 3-month-old Kaylynn Mianscum-Kelly was also being treated at the hospital when she died. The report determined she, like Ghali, had elevated levels of potassium in her system which had been added to a solution she required.

Dr. Ramsay said both deaths were accidental but avoidable.

In a statement issued Monday, the CHU Sainte-Justine Hospital said measures have already been put in place to improve the drug administration process, adding the deaths "were tragic, and our hearts are with the families at this time."