Investigation continues in St. Patrick's Day riot
A vehicle burns during a riot on London, Ont., in the early hours of Sunday, March 18, 2012. (THE CANADIAN PRESS/London Community News-Mike Maloney)
Police say 20 investigators have been assigned to the probe of the St. Patrick's Day riot in London.
Officials say officers are getting video and still images from social media and other sources in an attempt to identify anyone committing a criminal offence.
Photographs of suspects who can't be identified will be made available to the public through the London police website.
At least 15 people are facing charges arising from the riot.