India, Aug. 9 -- The civil aviation ministry said on Sunday that the Air Accident Investigation Bureau (AAIB) has begun its probe into the Phuket-Delhi flight turbulence matter that occurred before landing in Delhi on August 4. "The occurrence has been classified as a serious incident and is under investigation by the Aircraft Accident Investigation Bureau (AAIB)," a statement from the ministry read.

To be sure, the ministry had earlier said that the directorate general of civil aviation (DGCA) was investigating the matter.

The government also said that the psychoactive substance screening test of the pilot in command (PIC) showed a result requiring a confirmation test, a re-test.

"As part of the Standard Operating Procedures following...