A number of rockets hit a building in the Damascus district of Jaramana on Sunday, reportedly killing Lebanese militant leader Samir Qantar according to government loyalists.
Syria's state media blamed "terrorist groups" for the attack, but government loyalists said the explosions were an Israeli strike believed to have killed Qantar, who is reviled in Israel for a 1979 attack that killed four people.
Israel released Qantar in 2008 as part of a prisoner swap with the Lebanese Shi'ite Hezbollah group and he is believed to have joined the group since.
The National Defence Forces in Jaramana, which are part of a nation wide grouping of loyalist Syrian militias under the umbrella of the army, mourned Qantar and one of its commanders on its Facebook page.
"His body has been sent to a Damascus hospital moments ago," it said.
Reuters