Bomb blast hit the heart of Damascus city on Friday causing casualties among civilians and security forces

A bomb blast rocked the heart of Damascus city on Friday causing dozens of casualties among civilians and security forces personnel.
  
The explosion, which struck in Maidan neighborhood, targeted a bus carrying security forces, sources told Al-Manar TV. The Syrian Television said the bomb caused casualties among both civilians and security force personnel. It added that at least 25 people were martyred, 46 others were wounded in Maidan bombing. Most of the martyrs were civilians since that a school nears the explosion region which is over-crowded. Another bomb at the site was defused by the Syrian security forces.

Authorities pointed fingers at Al-Qaeda as being responsible for the explosion. Reports said that an Arab League delegation visited the site for examination.

Following are the initial scenes of the bombing