DAMASCUS, Oct. 21 (Xinhua) -- A car bomb exploded outside a French hospital in the northern Syrian city of Aleppo, causing an unspecified number of casualties, witnesses told Xinhua on Sunday.
Most of the casualties of the blast were medics and staff members at the French hospital, they said, adding that the bombing also caused severe damages to the building of the facility.
So far, Syria's official news agency SANA has released no reports about the explosion, and the number of the casualties as well as the target of the bombing remain unclear.
The blast occurred amid UN-Arab League special representative Lakhdar Brahimi's visit to Syria, where he is exerting efforts to mediate a cease-fire between the conflicting parties in the country during Muslims' festival of sacrifice, Eid al-Adha, which will soon start on Oct. 26.
On Oct. 3, multiple blasts rocked the main square in Aleppo, killing 34 people and injuring more than 120 others. The northern commercial hub of Syria has emerged as the main battlefield of the violent clashes in the country.