It was a deadly weekend in southern Ontario water.
Two siblings, a 7 year-old boy and his 10 year-old sister from Norfolk County, drowned at a Port Burwell beach.
Police said the siblings didn't know how to swim and weren't wearing life jackets.
Another child, a 12 year-old from North York, ran into trouble at Sherkston Shores on Lake Erie and didn't resurface.
