An al Qaeda affiliate threatened a "Volcano of Revenge" against Syrian government security and military targets in retaliation for a suspected poison attack
near Damascus, the SITE Monitoring Group reported late on Tuesday.
A branch of the Islamic State in Iraq and the Levant (ISIL)said in a statement it would punish Syria for a series of massacres, including last week's alleged chemical weapons
attack, after meeting eight Syrian factions.
"The meeting factions decided to carry out the "Volcano of Revenge" invasion in response to the regime's massacres against our people in Eastern Ghouta, the last of which was the chemical weapons massacre," SITE quoted the statement, dated Aug. 26, as saying.
"They have decided to strike the main joints of the regime in imprisoned Damascus, including security branches, support and supply points, training centres, and infrastructure," it said.
The United States and its allies are gearing up for a probable military strike against Syria, believing that President Bashar al-Assad's forces carried out the worst chemical weapons attack since Iraqi leader Saddam Hussein gassed thousands of Kurds in 1988.
Syria's government denies any role in the attack and blames rebels.
A team of UN inspectors is in Syria to investigate the affected sites.