Someone from the team of U.K. Prime Minister Theresa May has made a big mistake.
Documents containing complete details to the travel plans of the Prime Minister have been left on a train.
The papers contain important information such as the schedule to May's North West trip and the hotel address she was set to stay in.
Downing Street ordered an investigation to know how such mistake happened. The incident is considered serious security violation. Authorities have yet to say who is responsible for the error.
There are also other top security information in the papers like plans for May's call to NATO secretary general Jens Stoltenberg and the arrangement for a dinner in Altrincham.
Such information should be limited to the Prime Minister, close staff ,and top security officers.
The documents were found in the first class compartment of a train going to Edinburgh. Leaving important papers in a public transportation has exposed May and her team to danger. Her staff may be forced to change May's travel plans.
Former royal bodyguard Ken Wharfe said the mistake cannot be accepted because it is a serious security violation. The mistake can have a bigger effect since U.K. has serious terror threats.