17 killed in school shooting in Florida

Prime Minister Justin Trudeau has tweeted his condolences to those grieving in Parkland, Florida and is wishing a full recovery to the injured in Wednesday's deadly mass shooting at the local high school.

Trudeau said ``Canadians have you in our hearts.''

The Broward County sheriff says a young gunman, donning a gas mask, smoke grenades and multiple magazines of ammunition, opened fire with a semi-automatic weapon and shot nearly three-dozen people, killing at least 17.