"To the displaced all over the world, free Syria awaits you," Syrian rebels announced on Telegram.
Minutes before Russia announced Assad's alleged departure, reports surfaced of a plane taking off from a Russian airfield in Latakia, Syria.
Thousands in cars and on foot congregated at a main square in Damascus waving and chanting "Freedom," witnesses said.
There is little evidence that Syria's allies will step in to help Assad, CNN reported.
Iranian Foreign Minister Abbas Araghchi also traveled to the Syrian capital this week to meet with Assad to pledge the Islamic Republic's full support.
Rebels and the Syrian Observatory for Human Rights war monitor said insurgents had captured villages, including Maar Shahur, a few miles north of the city.
Jamaa is a veteran Hezbollah operative who has held several positions with the Hezbollah terrorist organization throughout the years, particularly with a focus on Syria.
Up until several days ago, the Syrian regime believed its backers in Moscow and Tehran could keep it safe.
A spokesperson for the terrorist organization named the terrorists as head of foreign relations Rasmi Abu Issa and member of the Political Bureau Abd Alaziz al-Minawi
Israeli army radio said the targets of the attack in Damascus were assets and the headquarters of the Palestinian terrorist group Islamic Jihad.