By Barbara Plett
BBC News, Islamabad
The Taj Mahal hotel was one of the targets in November's attacks
Pakistan says it wants to prosecute suspects in the Mumbai attacks, but says it needs more evidence from India.
A Pakistani cabinet committee has decided to register the attacks with police as a crime.
But the committee declared it would be difficult to proceed with the case without more information from India.
The committee was discussing a preliminary report into alleged Pakistani involvement in the November attacks that killed nearly 170 people.
The meeting was attended by top cabinet ministers and military chiefs of staff.
It examined a preliminary report into alleged Pakistani involvement in the attacks, prepared by Pakistan's chief investigation agency.
Although the committee decided to register a criminal case with police, it did not say against who or on what charges.
And a government statement said it would be very difficult to complete the investigation, and proceed with the case, unless India provided substantial evidence.
It said questions would be conveyed to the Indians shortly.
Delhi has already provided a dossier of what it says is clear evidence linking Pakistani elements to the Mumbai attacks.
Tensions between the two countries have risen sharply since November, with India accusing Pakistan of failing to take serious action.
Western governments have also urged Islamabad to prosecute the suspects.
Pakistan says so far the evidence is not strong enough to build a case that will stand up in court.
Newspaper reports and officials have also suggested that investigators believe the attack was planned outside Pakistan, and may involve a Bangladeshi connection.