She was awoken to find her shirt and trousers unbuttoned with Ramamoorthy digitally penetrating her, according to The Detroit News.
Ramamoorthy and his wife are living on a temporary visa, thereby disqualifying the latter as suitable custodian, according to federal prosecutor, Amanda Jawad.
The woman immediately reported the incident to flight attendants who said she "appeared visibly upset and was crying". She told authorities the man next to her had his fingers inside her trousers, and that he stopped when she woke up.
His wife who was in court and left in tears without commenting told police that she didn't like the other woman sleeping on her husband's lap and that she asked to change seats.
Ramamoorthy's wife told officials, 'they had called the flight attendants to try to change seats.
Before talking to the Federal Bureau of Investigation agent, however, Ramamoorthy claimed that he had been in "deep sleep" while the assault allegedly happened, and that the victim had fallen asleep on his knees. They assigned her a different seat at the back of the plane.
According to a written statement by Prabhu, he had taken a pill ("plain Tylenol") and fallen into deep sleep.
The horrific incident happened while the victim was asleep against the plane window. The female traveler then noticed that both her shirt and trousers had been undone.
"It seems that she's either colluding with the defendant to cover up his actions or she's completely oblivious to what he did", Jawad argued. Prabhu even traveled with his wife and she was beside him when the incident took place.
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", O'Neill said.
Spirit spokesman Stephen Schuler said the airline is "fully cooperating with law enforcement". Meanwhile, Ramamoorthy is now charged with aggravated sexual abuse and held without bail after an appearance in federal court in MI on Thursday.
The woman, Dodge reported, said that the male passenger next to her "was shoving his fingers inside her vagina and vigorously moving them".