Staff Reporter The investigation agencies have claimed major success in probes into kidnapping incidents of two girls, Bisma and Dua Mangi in Karachi. They have traced the gang involved in two kidnapping incidents, sources said. The agencies have also traced three hideouts of the abductors in the city, according to sources. “Dua and Bisma were kept at a building in Clifton Block-II after their kidnapping,” sources said. A gang led by an ex-policeman was involved in both incidents of abduction, sources said and claimed that the members of a nationalist group was involved in kidnapping for ransom incidents.