The victims included women and children
A total of 43 people were killed and 13 more injured when unidentified gunmen opened indiscriminate fire on a community bus in the Safora Goth area of Karachi, according to state media.
Radio Pakistan said the victims included women and children. Police and Rangers surrounded and cordoned off the area while the dead bodies and those injured were taken to nearby hospitals.
There were about 60 to 65 people on board the bus when the attack took place.