The cyber wing of the state police has launched a probe into the hacking.
Chief Minister, Oommen Chandy told reporters at his hometown Kottayam today that the hacking was a "grave issue".
The site is now being repaired by the state-owned Centre for Development of Imaging Technology which said the website server had not been hacked.
The hackers, who claimed to be Pakistanis, put up pro-Pakistani slogans on the hacked website.
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