The mobile versions of the University of Delhi and Aligarh Muslim University’s websites and the online portals of the Indian Institute of Technology in Delhi and Varanasi were hacked on Tuesday. The hackers posted messages promoting freedom for Kashmir, and against the Indian government.

The group identified itself as PHC and said that it had committed the breach in response to attacks on Pakistan’s Railway Ministry website on Monday. “Do you know what your so called heroes are doing in Kashmir?” the message from the hackers said. It accused Indian armed forces personnel of committing atrocities against the people living in the restive region.

In January, the National Security Guard’s website was hacked by a group identifying itself as the “Alone injector”. In 2016, the Indian Computer Emergency Response Team said that there had been an increase in the number of government website breaches compared to 2015, NDTV reported.