Thick plumes of smoke fill the air over the city of Saint John in New Brunswick, Canada as a "major incident" unfolds at a local oil refinery. <br /><br />Irving Oil confirmed the "major incident" on Monday following reports of an explosion and fire in the morning. "We are actively assessing the situation," they tweeted. <br /><br />Saint John police have recommended people avoid the area, tweeting, "police are currently responding to an incident at the Irving refinery. Please avoid the area."<br /><br />Saint John Regional Hospital has gone into "code orange", indicating an external disaster with mass casualties.
