Damage to the EnCana pipeline near the community of Tomslake was discovered Sunday, and the Royal Canadian Mounted Police summoned the Integrated National Security Enforcement Team, the Vancouver Sun reported.

The latest incident damaged a metering shed, but there were no injuries and no gas leaked, the RCMP said.

In October in the same area, two bombs were detonated along the EnCana line, and a third went off in early November, the report said.

No one has claimed responsibility for the attacks, but a handwritten letter sent to a Dawson Creek newspaper before the fist bombing demanded EnCana stop "endangering our families with crazy expansion of deadly gas wells in our homelands."