The Times of India reported Tuesday that a preliminary report had been submitted to officials. Details of the report weren’t available.

A preliminary report into the deadly crash of an Air India jetliner in June is expected to be released by Friday, three sources with knowledge of the matter said, with one adding the probe had narrowed its focus to the movement of the plane's fuel control switches.

Indian aviation accident authorities are set to release a preliminary report this week into the Air India Ltd. plane that crashed almost a month ago, a person familiar with the plan said.