A Nok Air Boeing 737-800, registration HS-DBT performing flight DD-6458 from Bangkok Don Mueang to Nakhon Si Thammarat (Thailand), was being towed to the departure gate along taxiway K and was about to turn into taxiway H when the tow bar broke. The tug stopped, the aircraft however continued to roll and turn until colliding with the tug now underneath the fuselage and wings. As result of the collision two ground workers were seriously injured, the tow tug driver subsequently died because of his injuries.
A replacement Boeing 737-800 registration HS-DBV reached Nakhon Si Thammarat with a delay of 30 minutes.
Video of the accident (Video: TNN Channel 16):