Kalat: At least three frontier corps (FC) personnel were killed while six others injured as unidentified gunmen attacked a convoy in Sohrab area of district Kalat here on Saturday.
According to reports, the convoy attacked at the time where it was on the way.
Rescue sources said that the injured and dead bodies were shifted to nearby hospital.
The FC personnel and other law-enforcement agencies cordoned off the area and started search operation in the area.
It was still unclear whether the blast occurred due to planted device or it was suicide attack.