Police have warned about the dangers of shining laser pens at aircraft.
It follows two reports on Monday of lasers being shone into the eyes of pilots landing planes at George Best Belfast City Airport.
Police said the lasers appeared to have originated in the Whitewell Road area of the city.
A police spokesperson said it was an offence to endanger aircraft and that such activity was "highly irresponsible and dangerous".
"Lasers can cause temporary blindness, which, where pilots are concerned, can spell catastrophe," she said.
The spokesperson said that those responsible should realise that they are putting people's lives in danger.
The police have asked anyone with information about such incidents to contact them.