A man was arrested for allegedly groping and sexually assaulting a female passenger onboard a Mumbai-Guwahati IndiGo flight.

The woman passenger accused the man of lifting the armrest and groping her while the cabin lights were dimmed during a late-night flight, India Today reported.

Authorities handed him over to the police after the flight arrived at the Guwahati airport, the airline said on Sunday.

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“An FIR has been filed by the complainant with the local police and we will provide assistance in their investigation, where required,” the airline said in an official statement on Sunday.

Recalling the assault, the woman said she was asleep and woke up to see the armrest lifted and the man leaning close to her. Concerned about her safety, she pretended to stay asleep and hoped that the man would go away, she told the Times of India.

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However, he went ahead and groped her, the woman alleged. She immediately alerted the cabin crew, and the man was handed over to Guwahati police upon the flight’s arrival.