Charges against a Scarborough woman have been upgraded from manslaughter to first-degree murder in the 2011 death of her disabled daughter.

It was back on February 9, 2011 that Toronto police were called to a home in the Malvern area. When they arrived, they found 16-year-old Cynara Amiee Ali, who suffered from cerebral palsy without any vital signs.

She was taken to hospital where she died the next day.

Her 42-year-old mother Cyndi Ann Sherry Ali had told police that, earlier that day, two armed men with Jamaican accents forced their way into their home. One man is said to have stayed with her daughter, while she was forced to go with the other man, as he searched the house looking for a specific item.

Ali claimed that Cynara lost consciousness during the supposed home invasion.

Ali was originally charged with manslaughter, criminal negligence causing death, failure to provide the necessaries of life, attempting to obstruct justice, public mischief and two counts of fabricating evidence.

The upgraded charges were announced by police on Wednesday morning, just before Ali was scheduled to appear in court.

A post-mortem examination had previously been done, but the cause of Cynara's death has not been released.