Transport Canada is trying to find out who has been pointing laser pointers at airplane pilots over the last few days.

There have been at least six instances recently where pilots landing at Montreal’s Trudeau airport have been distracted by a green laser pointer.

The device, which can be purchased for $100 and has a range of three kilometres, can blind airline pilots, so Transport Canada considers it a serious safety risk.

Montreal airport laser pointer a serious safety risk: Officials.