A blue laser beam was pointed at an Air Canada plane on Friday night as it passed over Guelph, police say.

Police received a call from the air traffic control centre at Pearson International Airport Friday at 10:51 p.m. after Air Canada Flight 372 to Toronto reported seeing a blue laser beam pointed at the aircraft. The plane was at an altitude of 2.1 kilometres (7,000 feet) at the time and the beam appeared to come from the area around Clair Road East and Gordon Street.

Police responded, but were unable to locate anyone responsible.

Two cases in Waterloo region

In January, Waterloo Regional Police reported a laser was pointed at a plane approaching Waterloo Region International Airport in Breslau. The pilot of a Cessna 172RG reported seeing a green laser as it landed on Jan. 25. There was a similar situation on Oct. 31, 2015, when a pilot reported seeing a green laser during a local flight.

So far this year, there have been 162 cases where lasers have been pointed at aircraft across the country. In 2015, there were 647 cases across the country.

Lasers are a concern for pilots because it can impair their vision when flying or landing a plane.