India, Nov. 27 -- An Atlanta flight turned chaotic on Tuesday when a passenger allegedly opened the plane's emergency exit door. The dramatic incident forced the Amsterdam-bound KLM flight to return to the gate, creating a tense scene at Hartsfield-Jackson Atlanta International Airport.

Flight 622, operated by KLM Airlines, was cancelled following the safety scare, FOX 5 Atlanta reported.

Officers from the Atlanta Police Department boarded the plane after it returned to the ramp to ensure safety.

Authorities said the passenger, 32-year-old Johannes Van Heertum, had called 911 from inside the aircraft, claiming he saw another traveller carrying a weapon.

Investigators said Van Heertum seemed to panic and behave erratically, which force...