The Karachi police chief, Additional Inspector General Azad Khan, revealed that foreign-based gangsters are operating an extortion network in the city.The port city has seen a surge in extortion incidents targeting builders and traders through international calls and attacks on business premises.Interpol Red Notices have been issued against five gangsters, who have scaled back activities.Police shared details of these criminals with relevant countries for further action.A recent crackdown on the 'Samad Kathiawari' group has reduced vehicle snatching by 25% and decreased murder rates during robberies.The police chief emphasized serious efforts to maintain peace in Karachi, highlighting economic security as critical.He also sought industrialists' support due to budget constraints and warned that a weak economy leads to rising crime.While acknowledging progress, he stressed the need for continued vigilance and community cooperation.