An 18-month-old girl in a home daycare on Montreal's South Shore has died after she was found lying in a crib, no longer breathing.

Police and paramedics were called to the family-run daycare in Saint-Basile-le-Grand — about 30 kilometres east of Montreal — at around 12:20 p.m, when one of the workers discovered the toddler was unconscious.

There were about half a dozen children at the daycare when the incident happened Friday afternoon.

Emergency responders tried to resuscitate the girl on site and then rushed her to hospital.

Officials at Charles Lemoyne Hospital declared the girl dead shortly after 1 p.m.

Investigators spoke to the couple who owns the daycare to determine the possible causes of her death.

Officials said it was still too early to know whether a factor at the daycare led to the baby's cardiac arrest or whether it was a medical issue.