For all the finger-pointing across the border, the attacks have forced India to confront a worrying disquiet among Muslims at home, who have overwhelmingly resisted calls to join in Islamic radicalism.

“That is still true to a very, very large extent,” India’s national security adviser, M. K. Narayanan, maintained. “But what has happened is that a very, very manifest attempt to recruit Indian Muslims is now being done.”

Those efforts, he said in an interview on CNN-IBN television, are increasingly directed at educated Indian Muslims and, more troubling, at elements within the military.

Senior Lashkar officials interviewed in Rawalpindi, Pakistani, said no more than 50 Indians attended military and religious training camps in Pakistan and the Pakistani-controlled part of Kashmir on average each year.

But they confirmed that an active recruitment drive was under way in India.

It is impossible to pinpoint to what extent the still apparently small number of recruits are motivated by essentially Indian grievances  especially the pogroms in 2002 against Muslims in the state of Gujarat, which left 1,100 dead  or by the ideology of global political Islam.

But increasingly, many here fear, the two are at risk of merging.

In fact, Mr. Narayanan said, a reminder of anti-Muslim violence in India is a powerful recruitment tool. “Quite often,” he said, “the motivation is ‘You know what happened in Gujarat.’ ”

The Business Standard, an English-language daily, urged India in an editorial last week to start looking inward at what it called a “homegrown jihad,” suggesting that blaming Pakistan alone for attacks on Indian soil was no longer sufficient.