The most wanted underworld don Dawood Ibrahim, the mastermind of the Mumbai serial bomb blasts, will now be under the radar of the NIA, the largest agency investigating the country's terror. The Ministry of Home Affairs has handed over the investigation related to the case of underworld don Dawood Ibrahim, the mastermind of the Mumbai serial blasts, to the NIA. In fact, according to sources, Dawood Ibrahim's younger brother Anees Ibrahim has been on the radar of Indian security agencies since last year in operating a drug smuggling business from Dubai. Watch this video.