"While the inquiry will fix responsibility for any dereliction of duty the fact that this is happening at all is a matter of great regret, " he added.

WSJ: Pakistani Prisoner Dies in India

"While the inquiry will fix responsibility for any dereliction of duty, the fact that this happening at all is a matter of great regret, " he wrote on the micro-blogging site, Twitter.

BBC: Pakistan inmate Sanaullah Ranjay dies in India hospital