India's government says it has "overwhelming evidence" that "official agencies" of Pakistan were involved in attacks on Mumbai that left 165 people dead. Home Minister P. Chidambaram also accused Pakistan in a TV interview to be aired Sunday of doing nothing to dismantle "the infrastructure of terrorism" on its soil amid heightened tensions between the nuclear-armed neighbours. "Given the overwhelming evidence we have, I am entitled to presume that official agencies (of Pakistan) were involved (in the attacks)," he said. Chidambaram, who gave no details of the Indian evidence, added the threat faced by India from Pakistan-based militants remained virtually undiminished since the attacks last November that killed 165 people.