The Punjab governor said the officer's outstanding leadership in the 1965 war would always be remembered.
"In the death of Marshal of the Indian Air Force Arjan Singh, the nation has lost a highly decorated soldier, who was always ready to defend the borders," he said in his condolence message.
The Punjab chief minister also declared a three-day state mourning as a mark of respect to the officer.
There would be no official celebrations and the national flag would fly at half-mast atop all government buildings in Punjab during these three days, an official spokesperson said.
Expressing deep sorrow, Khattar said the country has lost a war hero who will always be remembered for his outstanding services to the nation.
Former Punjab chief minister Parkash Singh Badal also condoled the passing away of the Marshal.
Badal has asked Shiromani Gurdwara Parbandhak Committee chief Kirpal Singh Badungar to place a picture of Singh in the Sikh museum in Amritsar.
A state funeral will be accorded to Singh and his last rites would be performed at Delhi tomorrow.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)