The United States' National Transportation Safety Board (NTSB) has launched a parallel probe into the Air India plane crash here, drawing several international experts to the accident site. The Aircraft Accident Investigation Bureau (AAIB) of India had earlier launched a detailed probe to get to the bottom of the cause of the deadly crash last week.

Several foreign experts were seen scouting the crash site for the last two days, checking the debris to find clues.

Boeing officials visited the site of Air India plane crash that killed at least 271 people on Sunday (June 15). Earlier, officials from the U.S. National Transportation Safety Board (NTSB) and U.S. Federal Aviation Administration surveyed the crash site.