New Delhi, Oct 31: Indian Prime Minister Narendra Modi, his predecessor Manmohan Singh and former president Pranab Mukherjee on Tuesday paid tributes to Indira Gandhi on her 33rd death anniversary"Tributes to former PM Mrs Indira Gandhi on her death anniversary," Modi said in a tweetMukherjee, Singh and Congress vice president Rahul Gandhi were the first ones to pay floral tributes to the late prime minister at her memorial site 'Shakti Sthal' (Place of Power and Strength) in the national capitalLater, Singh and Rahul Gandhi also attended a prayer meeting at the Indira Gandhi Memorial at 1, Akbar Road hereSeveral former union ministers, senior Congress leaders and Parliament members were also present at both the occasionsMukherjee tweeted, "Remembering PM Smt Indira Gandhi today. A strong leader and a visionary who served the nation till her last breath."Rahul Gandhi put out a tweet remembering the words of his grandmother along with her picture saying, "Forgiveness is a virtue of the brave: Indira Gandhi."Congress President Sonia Gandhi could not attend the programmes as she is indisposed. She has just returned home after being admitted to a hospitalBorn on November 19, 1917 in an illustrious family, Indira Gandhi served as the prime minister twice from 1966 to 1977 and again from 1980 until 1984, when she was assassinated on this day by two of her security guards.