Karachi: At least six suspected persons have been rounded up during search operation in different areas of Karachi. On a tip-off, the police accompanied by other law enforcing agencies conducted raids in hideouts in Sarjani Town area, North Karachi and rounded two suspected persons hailing from political party of Karachi. According to sources, the detainees were involved in target killing, extortion and other heinous crimes. Meanwhile, the police raided hideouts in Qasim Colony and Paposh Nagar area of Karachi and arrested four street criminals. The police also recovered weapons from suspects’ possession. At least two motorcyclists were crushed to death by speedy car driven recklessly by an unidentified driver near sea view road. Police said that the deceased could not be ascertained as yet.