Lebanon's militant Hezbollah group says its top military commander Mustafa Badreddine has been killed in Syria.
Hezbollah confirmed the death in a statement but did not give any further details.
Badreddine, who became the group's top commander in 2008 after his predecessor Imad Mughniyeh was assassinated, was killed by an Israeli air strike.
Badreddine was one of four people being tried in absentia for the murder of former Lebanese prime minister Rafik Hariri.
The 2005 suicide bombing that killed Hariri and 22 others was one of the Middle East's most dramatic political assassinations.
The trial began last year near The Hague and is ongoing.
A billionaire businessman, Hariri was Lebanon's most prominent politician after the 15-year civil war ended in 1990.