A continuous green light was shone at a Boeing 747 flying at 15,000 feet in an ‘attempt to endanger’ the safety of the plane.
Police are now appealing for witnesses following the incident at just after 10.30pm on Monday night.
Officers have narrowed the location of the light to Henton, a hamlet in Oxfordshire, one-and-a-half miles north of Chinnor and three miles west of Princes Risborough.
Anyone with information is asked to contact Det Con George Atkinson via the police’s enquiry centre on 101.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.