None of the people featured in this story have been named as suspects in the attacks. CBC News has no information suggesting they took part in the worksite attack or arson in Smithers.

As the cop in charge of the worksite investigation — which had 40 officers dedicated to it at one point — John Brewer said he wants to make sure that when charges are laid, they stick. He says that’s why he won’t say when arrests might be made. But he insists they will be.

In December, B.C.‘s Independent Contractors and Business Association put up a $100,000 reward for information leading to arrests and charges. The organization’s president, Chris Gardner, said he wanted to give the police investigation a boost.

“We were a little concerned that things had gone a little quiet,” Gardner told CBC News. Brewer said the reward has been “helpful,” but wouldn’t elaborate.

He did reveal to CBC News that so far, his team has identified more than half a dozen suspects who are being monitored. He said police have DNA evidence, a lot of video of the attackers and that they’ve been able to narrow down which of the protesters would be capable of operating an excavator so efficiently.

He also said some protesters have been co-operating with the investigation and pointing fingers.