With the US announcing a $ 10-million reward for Jamaat-ud-Dawa chief Hafiz Saeed and $ 2 million for his deputy Hafiz Abdul Rehman Makki, New Delhi on Tuesday piled pressure on Pakistan to act against the two men. Union Home Minister P Chidambaram said there was “enough material” to detain and interrogate Saeed, the mastermind of the Mumbai terror attacks, and that Pakistan was not “doing its duty”.