The head of the US National Transportation Safety Board said it’s too soon to draw conclusions about what caused the deadly crash of an Air India jetliner following reports that the captain of the plane likely moved switches that control the flow of fuel to the engines, a report said.

“Investigations of this magnitude take time,” NTSB Chair Jennifer Homendy said Friday in a post to social media platform X. She called recent media reports “premature and speculative,” without providing any specifics on what exactly she was referring to.