Indian police said on Saturday that Inter-Services Intelligence (ISI) agency and Pakistan-backed militant group Lashkar-e-Taiba were involved in the train bombings that killed 186 people and injured nearly 800 people on July 11.

"The new charges will test the resilience of the process that started in January 2004. But I don't think you can take a country to war over terrorism charges, as some would suggest," said C. Uday Bhaskar, a security analyst with the Institute for Defence Studies and Analyses in New Delhi.

After the Mumbai blasts, India called off talks with Islamabad, but decided to resume the dialogue after Indian Prime Minister Manmohan Singh met Pakistan's President Pervez Musharraf last month on the sidelines of a summit in Cuba.

The South Asian rivals agreed to share intelligence on terrorist activities in the region and the foreign secretaries of the two countries are scheduled to meet this year.

India Sunday decided to put the agreement to its first test, saying it would give evidence gathered by police to Pakistan showing the involvement of its spy agency and militant groups in the train bombings.

The country's new Foreign Secretary Shiv Shanka Menon, who most recently served as ambassador to Pakistan, said that Islamabad's repeated denial of any involvement in the blasts would have to be reassessed after it reviewed the evidence and that India would "judge it by its actions."

Security experts said the decision to hand over police evidence to Pakistan will put the anti-terror agreement to a severe test.

"Pakistan has been saying 'show us the evidence.' Now there is a mechanism for that. Let India take up the matter under the process, which will be put to the test now," said C. Raja Mohan, Strategic Affairs Editor at the Indian Express newspaper.