Iran’s Quds Force commander Esmail Qaani, who travelled to Lebanon after the killing last month of Hezbollah leader Sayyed Hassan Nasrallah in an Israeli airstrike, has not been heard from since strikes on Beirut late last week, two senior Iranian security officials told Reuters.

One of the officials said Qaani was in Beirut’s southern suburbs, known as the Dahiyeh, during a strike on Thursday that was reported to have targeted senior Hezbollah official Hashem Safieddine but the official said he was not meeting Safieddine.The official said Iran and Hezbollah had not been able to contact Qaani since then.

The Quds Force, the overseas arm of Iran’s Revolutionary Guards, oversees dealings with militias allied with Tehran across the Middle East, such as Hezbollah.

Iranian Revolutionary Guards commander Brigadier General Abbas Nilforoushan was killed with Nasrallah in his bunker when it was hit on Sept. 27 by Israeli bombs.