Vancouver police say it could take up to two years to finish laying charges related to the Stanley Cup riot.
Investigators have just returned from Indianapolis, where they worked with experts to analyze more than 5,000 hours of video, three times more than the amount they originally thought they had.
At a news conference on Monday morning, Insp. Les Yeo said investigators have identified more than 15,000 criminal acts on the videos and between 500 and 700 people may be charged by the time the investigations are concluded.
So far nobody has been charged, but police say they are moving slowly to ensure that the maximum number of charges are laid, and promise the first 40 charges will be announced at the end of the month.
Yeo could not estimate the final total cost of the massive investigation, but said the Vancouver Police Department is in talks with the province for more funding.
"I know there are talks with the province right now, but I'm not going to get into that," he said.
The riot broke out after the Vancouver Canucks' Game 7 loss in the Stanley Cup final on June 15. Rioters spent hours torching cars, smashing windows and looting stores in the city's downtown core, causing millions of dollars worth of damage.