LONDON — Who among us hasn’t searched frantically for our keys, or patted our pockets down in desperate search of our phones? But for a rather forgetful bodyguard in the U.K., his absentmindedness caused him to misplace his gun – in an airplane bathroom.

According to the Daily Mail newspaper, London’s Metropolitan Police have launched an investigation after a bodyguard for former Prime Minister David Cameron reportedly left his gun in the bathroom during a recent trans-Atlantic flight.

As a former British PM, Cameron is entitled to security provided by a specialist police unit.

The weapon was found and handed to flight attendants. The Sun reported that passports belonging to Cameron and the officer were also found.

Police said they were aware of the matter that took place on Monday, and that the officer involved has since been removed from operational duties.

“We are taking this matter extremely seriously and an internal investigation is taking place,” police said in a statement.

With file from The Associated Press