Police say a man has been charged with illegally climbing aboard a plane at Heathrow Airport.

The Metropolitan Police force says 38-year-old Louis Pedro Verdasca dos Santos Costa, of west London, has been charged with unlawfully being airside and unlawfully being on an aircraft.

He is due to appear in court next week. The incident, which occurred Saturday, is not believed to be terror-related.

British media reports said the man locked himself in the cockpit of an empty British Airways jet, where security officers struggled to reach him through the reinforced door, designed to protect pilots in case of attempted hijacking.

British Airways said Sunday it couldn't comment because someone had been charged in the case.

Heathrow said it was working with police and kept security "under constant review."