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According to the report, Kalayil, in his letter, warned of a devastating earthquake that could shake the Indian Ocean in December and trigger a massive Tsunami, which would affect seven Asian countries, including Pakistan and India.
While India paid no heed to the letter, Pakistani officials have taken this seriously as they have started preparations to deal with a possible disaster.
Pakistan's top intelligence agency has reportedly warned the Earthquake Rehabilitation and Reconstruction Authority (ERRA), the body responsible for disaster management, to take precautionary measures.
Another letter that has been doing the rounds on the social media is the one in which the ERRA acting deputy chairman allegedly directed that standard operating procedures (SOPs) on the matter may be prepared.
The ERRA letter read, "An Information Report has been received from DG, Inter-Services Intelligence [ISI] that there is, reportedly, likelihood of large scale earthquake, as being expected, in the Indian Ocean in near future which may vigorously shake the Asian continental areas, including Pakistan. There is, therefore, a need to sensitise concern departments to be on vigil and take care of any natural disaster."
"The SOPs will be put up to ERRA's acting deputy chairman by Monday, November 6, 2017," the letter further read.
There have been no reports yet that have given any scientific basis for this prediction.