New Delhi/IBNS, April 25 -- India on Thursday formally informed Pakistan about its decision to suspend the Indus Waters Treaty, which will come into effect immediately in the wake of the Pahalgam terrorist attack.

The letter came shortly after Islamabad's tit-for-tat move against New Delhi's diplomatic actions following the Pahalgam massacre.

Islamabad has threatened to suspend all agreements between the two countries, including the Simla Pact of 1972, which validates the Line of Control in Jammu and Kashmir and Ladakh, media reports said.

The Indian Government on Wednesday evening suspended the decades-old Indus Waters Treaty with Pakistan indefinitely as a part of some strict measures taken against Islamabad over the "cross-border li...