Sporadic violence is reported to be continuing in the southern Pakistani city of Karachi, as security forces try to re-establish control of the city after two days of bloodshed.
More than 60 people have now died.
The trouble started on Monday when Raza Haider, a politician with the MQM party, was shot dead.
MQM leaders initially blamed a rival political party, the ANP, but now say Sunni extremists may have carried out the killing.
