Breaking news. Reports of casualties vary according to the agency
This is Sky news
A bus has exploded in the Syrian capital of Damascus.
The blast took place in the busy suburb Sayyida Zainab, killing up to a dozen people, according to local reports.
Scores more are said to have been injured.
Witnesses said that the explosion targeted a bus carrying Iranian pilgrims.
The suburb is home to a shrine dedicated to the granddaughter of the Prophet Muhammad and attracts Shi'ite Muslim pilgrims.