"I tell the party of Iran to leave Syria before it's too late," Serag al-Din Zureiqat said via Twitter in Arabic and Persian, referring to Hezbollah, a close ally of Shia Iran.
The Abdullah Azzam Brigades had earlier claimed responsibility for two deadly suicide attacks – in February of this year and last November – on the Iranian embassy in Beirut.
Throughout the past year, bombs have struck at least 17 Hezbollah strongholds in southern Beirut and the eastern Al-Harmal region.
Zureiqat said that previous bombings claimed by the Brigades were intended to show "support for those who have been afflicted in Syria and Lebanon."
He went on to vow "further terror" against Hezbollah if the latter failed to withdraw its fighters from Syria.
"Wait for more episodes of terror that will make you forget the others," Zureiqat warned the Shia militant group.
Since early last year, Hezbollah has been sending fighters to next-door Syria to fight alongside Syrian government troops and against Syrian opposition forces.
Hezbollah's continued involvement in the Syrian conflict has drawn condemnation from Sunni-Muslim quarters both inside and outside Lebanon.
By Hamza Takeen
englishnews@aa.com.tr
