India's home minister says indications point to domestic terrorism behind the attack last month in Mumbai that killed 26 people.
Home Minister Palaniappan Chidambaram told Parliament in a debate Thursday that no conclusion had been reached but all indications were an Indian group was responsible.
His comments reported by the Press Trust of India were the first indication of what the investigation has uncovered since the attack July 13.
No group has claimed responsibility for the bombings. Local police have said the attack carried the hallmarks of the Indian Mujahedeen but have not elaborated.
Chidambaram also gave Parliament a higher death toll than the 20 fatalities previously reported. Some people wounded in the bombings died recently.