Officials in Laval, Que., working with police, have launched an investigation after green space advocates captured video of what appears to be camouflage-clad men covertly draining a patch of wetland over the weekend. It's still not known why the men allegedly dragged large pipes, a pump and hoses into a wooded sector near Saint-Elzéar Boulevard West, but Laval's deputy mayor, Stéphane Boyer, says it certainly won't lead to any construction permits being issued — if that was their plan.