Laser shone into plane's cockpit over County Durham
The pilot of a plane carrying more than 220 passengers and crew reported having the beam from a laser pen shone into his cockpit.
Durham Police said they were alerted on the evening of 15 September after the Jet2 plane from Crete came in to land at Newcastle Airport.
The laser pen was later pointed at the crew of a police helicopter who went to investigate near Chester-le-Street.
A 17-year-old was arrested in the Pelton Fell area and released on bail.
Police said a number of incidents involving laser pens had been reported to Air Traffic Control at Newcastle Airport over the past few days.
They believe someone in the Pelton Fell area brought a number of the pens back from abroad and are trying to trace them.