No suicide note has been found, they added.
Gupta ended her life by hanging herself to a ceiling fan at the house of a relative in Rohit Nagar area, where she was staying, they said.
She was alone in the house when she took the extreme step, police said.
Former flying officer Gupta, who had accused her senior officers of sexually abusing her, was dismissed by the Air Force in February 2006 after she was found guilty on seven counts ranging from indiscipline, insubordination to financial misappropriation.
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