A blast targeting an office of Lebanese Shiite group Hezbollah in a Damascus suburb has left tens injured, a media opposition group reported late on MondayAl Arabiya reported.
This is the second assault on one of Hezbollah's offices in the capital's Sayida Zeinab district, which is also the location of a Shiite shrine.
The opposition Free Syrian Army also claimed that tens of Hezbollah fighters were injured after the second attack on Saturday.
The district in Southern Damascus was used as a base by Iranian-backed Hezbollah and Iraqi Shiite fighters.
In a separate story, a Sunni Arab lawmaker was kidnapped by Islamist fighters during clashes with members of his pro-regime tribe in Syria's eastern province of Deir Ezzor, Agence France-Presse reported a monitoring group as saying on Monday.
Fighters from the Ahrar al-Sham rebel group and jihadists from the Al-Qaeda-affiliated Islamic State of Iraq and the Levant (ISIL) abducted MP Mohanna Faisal al-Fayyad on Sunday evening, the Syrian Observatory for Human Rights said.
The abduction, the Britain-based Observatory said, followed two days of clashes between members of Fayyad's tribe, which supports the regime of President Bashar al-Assad, and the rebels groups.
Most of the oil-rich Deir Ezzor province is in rebel hands.