Ottawa Paramedics say 13 children were sent to CHEO Tuesday afternoon after a chlorine leak at Calypso Water Park, East of Ottawa.

Spokesperson J.P. Trottier say the children, between the ages of 4 and 14, faced symptoms of burning eyes, nausea, and vomiting.

Six ambulances from Ottawa and Prescott and Russell were on scene.

Another child was treated at the park by paramedics and released.

An investigation is under way.