Ottawa, April 28 -- A total of 11 people have been confirmed dead after a driver drove into a crowd at a street festival in Vancouver, Canada, on Saturday evening, said the police on Sunday.

The Vancouver police said in a news conference that the number of dead could rise as dozens more are injured, some seriously.

Interim Vancouver Police Chief Steve Rai said the victims include both male and female, with "very young people" among the dead.

The driver does have a significant history of interactions with police and with "health-care professionals related to mental health," Rai said.

"This is the darkest day in Vancouver's history," said Rai.

The tragedy happened shortly after 8 p.m. (0300 GMT) near East 43rd Avenue and Fraser Stre...