Pakistan has acknowledged that the only surviving gunman from November's attacks in Mumbai (Bombay) is a Pakistani citizen.
After weeks of refusing to confirm the allegations, the foreign ministry said: "We have just been informed ... that Ajmal Kasab is a Pakistani national."
Mohammed Ajmal Amir Qasab was detained on the first night of the attacks by 10 gunmen on 26 November. More than 170 people were killed.
The BBC reports that he faces a number of charges, including murder, attempted murder, waging war against a country and criminal conspiracy.
India says all 10 gunmen were from the Pakistan-based militant group Lashkar-e-Taiba. Relations with Pakistan, which denies any role, are under strain.
Meanwhile, Pakistan Prime Minister Yousuf Raza Gilani has dismissed his national security adviser, Mehmood Ali Durrani, amid the tensions with India. It is not entirely clear why Mr Durrani lost his job.