On May 15, German national Carlo Konstantin Kohl escaped his police escort while waiting to transit through the airport en route to Germany. Security cameras showed the man fleeing a room where he was being held while his two guards were asleep at about 4.30am the day after his arrival. Airports of Thailand (AOT) chairman Sita Divari said yesterday AOT would attempt to identify all weaknesses in the security system at the airport following the incident. He said more measures would be added.