Lebanon’s military court convicted six people accused of killing a U.N. peacekeeper, the United Nations Interim Force in Lebanon said Tuesday. Lebanese officials said the chief defendant was sentenced to death, Associated Press reported.

“UNIFIL welcomes the conclusion of the trial process and the Government of Lebanon’s commitment to bring the perpetrators to justice,” it said in a statement.

UNIFIL did not give further details, but three Lebanese judicial officials, who spoke on condition of anonymity because they were not authorized to speak publicly about the case, said the court had issued a death sentence in absentia Monday against Mohammad Ayyad, the main defendant in the case, according to Associated Press.