The government announced national mourning on Monday as Goa Chief Minister Manohar Parrikar died this evening, officials said.
A Home Ministry spokesperson said the national flag will fly at half-mast in the national capital, the union territories and the state capitals.
A meeting of the Union Cabinet will be held on Monday at 10 am.
State funeral will be accorded to Parrikar.
The Goa chief minister died at his private residence in Panaji. He was 63.