A 12-year-old New York boy visiting Toronto for a soccer tournament has died after drowning in a hotel pool – the third such incident in a less than a week.

A team of soccer players between the ages of 9 and 13 went swimming at the Crown Plaza hotel pool shortly after arriving in Toronto on Friday.

The boys were supervised by several adults, but there was no lifeguard on duty, police said.

Several boys told the adults they had seen two boys, a 12-year-old and a 13-year-old, struggling in the water around 3 p.m.

One boy, the 12-year-old, was observed at the bottom of the pool, while the 13-year-old tried to stay afloat.

Two teammates jumped in and pulled the 12-year-old from the bottom of the pool while an adult pulled out the 13-year-old.

A second adult began CPR on the 12-year-old until paramedics arrived.

He succumbed to his injuries early Saturday morning, police said.

The 13-year-old did not sustain any injuries.

The boys were from Brooklyn, N.Y. and had come to Toronto to participate in the Robbie International Soccer Tournament.

On Friday evening, the second of two boys pulled from an indoor pool in the city's west-end on Wednesday died.

The boy, a 14-year-old, had been swimming with another 14 year-old boy when they began struggling in the pool of a condominium near McCowan Road and Finch Avenue East.

One fourteen-year-old was pronounced dead Wednesday; the second boy was on life support through Friday.