War monitor Syrian Observatory for Human Rights say the casualties took place when a roadside bomb detonated as a bus passed and a suicide bomber blew himself up in Bab al Saghir.

At least 30 people were killed and over 100 wounded in two synchronised attacks in the Syrian capital Damascus on Saturday targeting Shia pilgrims, the Britain-based Syrian Observatory for Human Rights reported.
A roadside bomb detonated as a bus passed and a suicide bomber blew himself up in the Bab al Saghir area, which houses several Shia mausoleums that draw pilgrims from around the world.
The director general of the capital's Al-Mujtahed hospital said that there were 28 people dead and 45 wounded.
The bus that was just targeted in Damascus had "Arabic Hospitality" sticker on its windshield pic.twitter.com/GzFzwj2pBg
— S. Rifai (@THE_47th) March 11, 2017