Damascus: Iran and Syria will launch a joint investigation into the death of Hezbollah commander Emad Mughnieh.
Hezbollah has threatened Israel with "open war" over the death of the commander who was killed in a car bombing in Damascus on Tuesday. Israel denied involvement.
A Lebanese security official said Mughnieh's successor has been appointed, but did not identify the successor.
Mughnieh was among the United States' most wanted men and was the suspected mastermind of 1980s attacks on the US Embassy and Marine barracks in Lebanon.
Iranian Foreign Minister Manouchehr Mottaki met Syrian Vice President Farouk Al Sharaa in Damascus on Friday to discuss the killing.
In Tehran, Deputy Foreign Minister Ali Reza Sheik Attar said the joint investigation team will "look into the root causes and dimensions of the assassination to identify the perpetrators of this dirty crime," the state IRNA news agency reported.
Meanwhile, an Iranian Arabic television station on Friday released mobile phone footage of the scene minutes after the blast that killed Mughnieh.
It showed the car on fire and people running past it. The source said the investigation showed Mughnieh was killed by a car bomb parked close to his car.
