(CNN) NASA is examining a claim that an astronaut improperly accessed the bank account of her estranged spouse from the International Space Station, The New York Times reported Friday -- potentially the first criminal allegation from space.

NASA astronaut Anne McClain told investigators she had accessed the bank account of her spouse while on a six-month mission aboard the ISS in preparation for her role in NASA's anticipated first all-female spacewalk , the Times reported.

McClain's spouse, former Air Force intelligence officer Summer Worden, brought a complaint with the Federal Trade Commission that McClain had committed identity theft, despite not seeing any indication of moved or spent funds.

Worden's parents then brought another complaint with NASA's Office of Inspector General, alleging that McClain had improperly accessed Worden's private financial records and conducted a "highly calculated and manipulative campaign" to gain custody of Worden's son.

McClain's lawyer, Rusty Hardin, told the Times that "she strenuously denies that she did anything improper" and "is totally cooperating."

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