Vancouver Coastal Health spokeswoman Anna Marie D'Angelo said Thursday that three stabbing victims had been admitted and an unidentified man was in critical condition with head injuries after a fall from a viaduct.
Rioting and looting left cars burned, stores in shambles and windows shattered over a roughly 10-block radius of the city's main shopping district.
Police Chief Jim Chu called those who incited the riot "criminals and anarchists" and said officers identified some in the crowd as the same people who smashed windows and caused trouble through the same streets the day after the 2010 Winter Olympics opened.
"These were people who came equipped with masks, goggles and gasoline," he said. "They had a plan."
Assistant Fire Chief Wade Pierlot said people had to be rescued from rooftops and bathrooms where they had hidden for safety.
"What I've seen is a complete disgrace," said Beth Hope, 28, who is originally from England but has lived in Vancouver for two years. "I'm a Canucks fan, but my jersey's in my bag. I'm ashamed to be a fan right now."