Prime Minister Narendra Modi paid tributes to revolutionaries Bhagat Singh, Sukhdev and Rajguru on Martyrs` Day on Thursday. The day is observed to mark their death anniversary.

The three freedom fighters were hanged by the British in 1931 in what is known as the `Lahore conspiracy` case, and their story of sacrifice and valour is considered one of the most inspirational chapters of the Indian freedom movement.