All three members of a Toronto family pulled unconscious from a swimming pool in a Gananoque hotel over the weekend are now dead.

Naila Yasmin, 43, was found unconscious in the indoor pool on Saturday along with her two daughters who were 11 and 14 years old.

Witnesses told police they initially saw the mom on the pool deck, supervising her children. Police say their investigation shows that the three were not strong swimmers.

When someone else passed by, they saw the three submerged in the pool's deep end, which has about two metres of water.

All three were without vital signs when paramedics arrived at the Best Western Country Squire Resort. Paramedics performed CPR for about 30 minutes before transporting the family to hospital.

Naila died Sunday, with her older daughter Kinza Kaianad succumbing on Monday. Sunaila Kaianad, the youngest, died Tuesday afternoon.

Yasmin's husband and the couple's two sons were having breakfast at the hotel at the time of the accident.

Police are investigating to determine what happened, but foul play is not suspected.