Lucknow, Dec 27 (ANI): Home Minister Rajnath Singh on Saturday sought fugitive don Dawood Ibrahim's extradition after a tape claimed his presence in Karachi. Tapes broadcast by news website newsmobile.in alleged that Dawood, accused of being involved in 1993 serial bomb blasts in Mumbai, was running and expanding his business empire from his hideout. India has claimed that Pakistan continues to provide safe haven to suspected Dawood Ibrahim to further its proxy war but Pakistan denies it. In the tapes, Dawood is allegedly talking to his key associates Javed who manages his real estate business in Dubai in upscale areas.