Another news story,
http://cnews.canoe.ca/CNEWS/Crime/20...19256-sun.html
includes quotes from  a resident of the house.  Excerpt: 
"Everybody was hanging out at the house -- we get together to watch TV and party a little bit -- and there was a big bang at the door," Andrew Weiner, a resident of the house, said. 
"One of the guys goes out, looks down the hallway and comes back and says 'there's a man pointing a gun to our house,' " he said. "Next thing we know there's plainclothes guys everywhere, people are on the floor." 
Those who ran out the back door were arrested  .  .   .   .  "They went through the entire house and took a bunch of us down (for questioning at the police station)," said Weiner, who was released without charges.