A militant arrested in Pakistan has confessed involvement in the Mumbai terror attacks and is giving investigators details of the plot, a senior Pakistani government official said Wednesday. The revelation could add to pressure on Islamabad to either bring Zarar Shah and other suspects to trial or extradite them to India. “(Shah) has made some statement that he was involved,” said the government official, without providing specific details. “I can tell you that he is singing.” The official spoke on condition of anonymity because of the sensitivity of the topic. A senior intelligence officer said Shah and another suspect, Zaki-ur-Rehman Lakhvi, were cooperating with investigators, but cautioned authorities had not reached a definite conclusion as to their involvement yet. Shah and Lakhvi have been identified as members of Lashkar-e-Taiba, a banned militant group accused by India of carrying out the Mumbai attacks and others on its soil. They were taken into custody soon after the attacks. The official also said that India has shared some evidence of its suspicions but he said it was “very very little.”