A group of environmental activists that disrupted several major pipelines carrying crude from Canada to the United States acted recklessly and “could have created a dangerous situation,” Kinder Morgan Canada president Ian Anderson told BNN.

Ten activists from the U.S.-based group Climate Direct Action were arrested in four different states on Tuesday after cutting padlocks and chains and entering valve sites in an attempt to stop the flow of millions of barrels of crude.

Disruptions affected Kinder Morgan’s TransMountain pipeline, TransCanada’s Keystone pipeline, Spectra Energy Partners’ Express Pipeline. Enbridge said it temporarily shut its Line 4 and 67 pipelines at its valve site in Leonard, Minnesota.

“My initial reaction was that it was a reckless trespass that could have created a dangerous situation,” Anderson said in an interview.  “It didn’t. We found out about it quickly, we got on site, no damage was done to the facilities, and no damage was done to people.”

Anderson added that Kinder Morgan’s pipeline was only down for a “very, very short period.” Anderson said the company has not beefed up security in wake of the trespassing incident, but Kinder Morgan is assessing its current safety measures and will determine if more is necessary.

“These are facilities that aren’t meant to be tampered with by someone who doesn’t know what they’re doing, so for the protection of the public, my employees and the environment around the facilities, we have to make sure it’s secure,” he said.

“I’m satisfied that they are, but it may be an ongoing assessment.”

The energy executive is not alone in his safety concerns. Federal Energy Minister Jim Carr also said his ministry is monitoring the situation closely.

"Tampering with energy infrastructure is a dangerous activity and it could cause harm to citizens and surrounding communities, which is unacceptable," Carr said.

For years, environmentalists have been fighting to stem Canadian oil sands production in favour of cleaner energy alternatives.

With files from Reuters