India will give Islamabad evidence that Pakistan's spy agency planned the deadly July 11th Mumbai train bombings, India's new foreign secretary said today.
"This [evidence] is something that we will certainly take up with the government of Pakistan," said Shiv Shankar Menon.
Indian police alleged a day earlier that Pakistan's Directorate of Inter Services Intelligence (ISI) was behind the bombings that killed more than 200 people in Mumbai.
Pakistan immediately denied the claims and demanded evidence. The two neighbouring countries, both nuclear-armed, are bitter rivals who have fought three wars since their independence from Britain in 1947, although they have been engaged in a peace process in recent years.
"We will judge them [Pakistan] not by their verbal actions, but what they actually do," said Mr Menon, whose previous position was India's ambassador to Pakistan.
India's main Hindu nationalist opposition, the Bharatiya Janata Party, called on the government to sever ties with Islamabad.
At a news conference on Saturday to announce the end of the investigation into the bombings, Mumbai Police Commissioner AN Roy said the intensive investigation, which included questioning suspects drugged with "truth serum," revealed Pakistan's role.
"The conspiracy was hatched in Pakistan," Mr Roy said. "The terror plot was ISI-sponsored and executed by Lashkar-e-Tayyaba operatives with help from the Students' Islamic Movement of India."
Lashkar-e-Tayyaba, or Army of the Pure, is a Pakistan-based Islamic militant group; the Students' Islamic Movement of India is banned.
Mr Roy said 15 people, 11 of them Pakistanis, had so far been arrested in the investigation. Three Indian suspects are still on the run, and a Pakistani bomber was killed in the blasts, he said.