Mumbai Police investigations after the 2010 Varanasi bombing , indicated that Pakistan-based Bhatkal brothers , Riyaz and Iqbal , the chiefs of the Indian Mujahideen ( IM ) being the brains behind the explosion , which was carried out by Dr Shahnawaz presently based both in Dubai and Pakistan . He is the brother of IM foot soldier Mohammed Saif , who was arrested in the Batla House encounter . Dr Shahnawaz along with Khalid , Abu Rashid and Bada Sajid or Mohammed Sajid had fled to Nepal after the encounter . Shahnawaz was formerly a physician in a Lucknow Hospital and all four now hold Nepalese passports
2010 Varanasi bombing
2010 Varanasi bombing
Batla House encounter case