A day after India revoked visas issued to Pakistani nationals in the wake of the Pahalgam terror attack, Union Home Minister Amit Shah today spoke to all Chief Ministers, asking them to identify all Pakistani nationals in their states. Sources said Mr. Shah asked the Chief Ministers to take steps to ensure their prompt return to Pakistan. The Home Minister will also hold a meeting regarding the Indus Water Treaty in New Delhi this evening. Union Jal Shakti Minister C R Patil and senior government officials will attend it. India has suspended the Indus Waters Treaty in the wake of the terror attack.