Nobody tipped him off about this: Peter Paradis gunned down on Wellington 1998.

This excerpt from Peter Paradis' autobiography Nasty Business (ghosted by George Kalogerakis) suggests that everybody from bums to top officials at Verdun city hall helped his cause. The photo shows Paradis lying on the pavement after getting shot by Hells Angels on Wellington (can anybody recognize exactly where it is?). He recovered and avoided serious jail time by providing evidence a couple of other bikers. He doesn't tell people where he lives now.

We often met at a Chinese restaurant called Kim Hoa because Renaud had a fondness for Asian food. We had used the Lesage Street clubhouse in the past for meetings but Renaud shut it down because of the bombing attempt.
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The purpose of our meetings was to exchange intelligence. Both Renaud and I had ordinary people helping us. A mailman used to tell us if he saw anything unusual on his route. So did numerous street prostitutes we knew. A city employee would call me whenever he saw police cars massing nearby Verdun city hall, readying to do a bust somewhere. When I heard from him, I'd call all my dealers to warn them something was up. There was also someone pretty important in Verdun politics who would do business with us. A waitress I knew would listen in on cops talking as they ate and report back whatever she overheard. And I had a friend at the license bureau who I was hoping to persaude to give me the addresses of various Hells people.