Given the nature of his job, a terrorist heading an underground organisation usually grooms a successor who is prepared to take over in case of his boss's arrest or demise.
The Indian Mujahideen follows the same pattern as its creator, Lashkar-e-Tayiba.
Uzma, accompanied by Indian mission officials, crossed the Wagah Border near Amritsar.
Paving the way for his execution, the Supreme Court on Thursday rejected the review plea of Yakub Abdul Razak Memon, sole death row convict and a co-conspirator of fugitive Dawood Ibrahim in the 1993 Mumbai serial blasts case.
Interference from politicians in terror cases creates added confusion, giving operatives enough time to give investigators the slip. Vicky Nanjappa reports