Mahmoud Bazzi appeared in court last week for the 1980 murder of two Irish army peacekeepers serving with the United Nations.
The 72-year-old appeared before a military court in Beirut on Friday, the Detroit Free Press reports.
Bazzi was deported to Lebanon in January where he was arrested.
Last year, a judge in Detroit ordered the Lebanese Shia man to be deported because he had entered the U.S. on a fake passport.
Known in Dearborn, MI for selling ice cream from a truck, reports have said Bazzi was working for the South Lebanon Army, a pro-Israel Christian militia, at the time of the murder of the Irish soldiers, Privates Thomas Barrett and Derek Smallhorne, who were on patrol in Lebanon for the United Nations.
Bazzi has denied he was involved in the killings.
Bazzi’s attorney, Fred Ajluni has said that Bazzi’s only crime was lying on his application for a passport.
A mini-documentary released last year by the Detroit Free Press included footage of Mahmoud Bazzi taking credit for the killings on Lebanese TV.
Read the back story here: Alleged killer of Irish UN soldiers is living in Detroit, selling ice cream