The website of the Central Bureau of Investigation (CBI) has been hacked allegedly by a group identifying itself as the 'Pakistani Cyber Army', which also claimed to have hacked the server of the National Informatics Centre (NIC).

While the banner and index of the website, which was hacked Friday night, is intact, the group has posted a message, mocking India's premier investigating agency. The website was down Saturday morning as well.

The message read: "This attempt is in response to the Pakistani websites hacked by 'Indian Cyber Army'. We told u before too...we are sleeping but not dead."