Narita International Airport Corp. has asked airlines to reinforce security to prevent intruders from breaking into aircraft parking areas from cargo areas, airport officials said Friday.
The operator of Narita airport, the world's second-busiest airport for cargo handling, has asked that security guards be increased and more security cameras installed.
The move came after the U.S. Transportation Security Administration, after inspecting the airport, cited the possibility of an intrusion.
Aircraft parking areas require an entry permit, but transportation company employees are allowed to enter adjacent cargo hold areas without one. The gates connecting the two areas are only watched by security guards making rounds.