"Everything has been done according to the law of land. All actions have been taken as per the law of the country," said External Affairs Minister Salman Khurshid.
The process of the hanging took place quietly and swiftly after President Pranab Mukherjee rejected Kasab's mercy plea Nov 5, sources said.
A special inspector general of police in Maharashtra and 16 handpicked men oversaw Operation X leading to the hanging. Their mission was to complete the job in complete secrecy.
Recounting the events as they unravelled, sources told IANS that once union Home Minister Sushilkumar Shinde signed the file from the president's office on Nov 7 and sent it to the Maharashtra government the next day, the police team took charge. The decision was taken to hang Kasab on Nov 21 but only a handful knew about it.