Ramamoorthy, before talking with the specialist, gave a composed explanation that he was in "profound rest", that the woman nodded off on his knees and that he is "not certain where (he) kept the hand on her". "She woke up to a hand in her trousers and noticed that her trousers and shirt were unbuttoned", reported Agent Kyle Dodge.
In a written statement, Ramamoorthy claimed that he had taken a pill and fallen asleep.
The woman was sitting in a window seat, with Ramamoorthy next to her.
But flight attendants told investigators that only the alleged victim had asked for her seat to be changed.
She said Ramamoorthy was seated between his wife and the victim and continued assaulting her until she woke up and went to report the incident to flight attendants.
Campos took to Twitter on December 20 to say how she was sexually harassed on a United Airlines flight.
Federal prosecutor Amanda argued that Prabhu was "even more of a danger to the community" because he was "brazen enough" to commit the sexual assault in public "next to his wife where anyone could have seen him".
Ramamoorthy's lawyer, Richard O'Neill, had offered to turn over his client's passport.
Ramamoorthy has been working as a project manager at a technology group for about two and a half years. "I have a hard time with some of these allegations, but that's what a trial is for".
Spirit Airline officials did not respond to requests for comment.
The woman, Dodge reported, said that the male passenger next to her "was shoving his fingers inside her vagina and vigorously moving them". After appearing before the federal court in MI, he was held without bail for aggravated sexual abuse.
Stephen Schuler, a spokesman for Spirit Airlines, said Thursday the company is fully cooperating with law enforcement and referred all questions to them.
A CNN investigation found that FBI investigations into midair sexual assault have jumped by 66 percent from the fiscal year of 2014 to 2017.