The was not accessible even by late Saturday.

The hackers calling themselves the “Pakistani Cyber Army” left a message saying that the attack was in revenge for similar Indian attacks on Pakistani sites, according to local media reports.

The border dispute between India and Pakistan over Kashmir has often spilled online, with both sides attempting to hack each other’s sites.

The website of Pakistan’s Oil & Gas Regulatory Authority was hacked on Saturday by a group called “Indian Cyber Army” in retaliation for the CBI website hack, according to The Express Tribune newspaper in Pakistan. The displayed the message “This Account has been suspended” late Saturday.

Some other sites in India were also defaced, according to various reports.