Federal prosecutors in Detroit have charged an engineer with sending corporate trade secrets to a brother in Iran.
Amin Hasanzadeh of Ypsilanti is also accused of lying on immigration forms by failing to disclose his service in the Iranian military.
He has permanent resident status in the US, commonly referred to as a green card.
The FBI said the 42-year-old Hasanzadeh sent confidential documents to Iran while working at a Michigan company that serves the auto and aerospace industries.
The government said his responsibilities included work on a supercomputer that had aerospace applications. The alleged scheme occurred in 2015 and 2016, reported The Associated Press.
Hasanzadeh appeared in court Wednesday and asked for an attorney. He stated he works at the University of Michigan. He is in custody until a Friday hearing.