The toddler was laid to rest at a funeral in Edmonton on March 9.The toddler was laid to rest at a funeral in Edmonton on March 9. (CBC)

RCMP arrested a person Friday in relation to the death of an Alberta toddler who was in foster care.

The 21-month-old girl, from the Morinville area, died March 3 after being brought to an Edmonton hospital in serious condition two days earlier.

An autopsy on March 4 ruled the girl's death a homicide. The cause of death and the name of the deceased has not been released. The child's identity cannot be revealed under Alberta child welfare legislation.

CBC News learned that the child was in the care of two foster families before she died.

The child had been cared for by members of one foster family but they needed a break, so she was put in the care of another foster family to provide some respite care.

CBC News also learned that prior to her death, the child had been in the care of a driver who was to take her for a visit with her biological mother, though that visit never occurred.

RCMP and the Alberta Children and Youth Services both continue to investigate the incident.

Charges are expected to be laid on the weekend. RCMP said they will release further information on Monday.