NEW DELHI (Reuters) -Efforts are underway to reconstruct the sequence of events leading to the Air India plane crash this month that killed 260 people, and identify contributing factors, India's civil aviation ministry said on Thursday.

Investigators have begun analyzing data from the black boxes recovered from the Air India Boeing 787 jet that crashed earlier this month, killing 270 people.

India has refused a UN investigator's assistance in probing the Air India jet crash that killed 260 people. The investigation by India's Aircraft Accident Investigation Bureau has faced criticism for delays and lack of transparency regarding crucial black box data analysis.