India on Tuesday paid homage to the country\'s youngest Prime Minister Rajiv Gandhi who was assassinated on this day 22 years ago while on a poll campaign in the southern state of Tamil Nadu. Indian President Pranab Mukherjee, Vice President Hamid Ansari, Prime Minister Manmohan Singh, the late Prime Minister\'s wife and Congress chief Sonia Gandhi, and other senior Ministers offered floral tributes at his memorial in the national capital Tuesday morning. Rajiv Gandhi, who became the prime minister at the age of 40, was in power from 1984 to 1989. He took office after his mother and India\'s first woman Prime Minister Indira Gandhi was assassinated by her Sikh bodyguards in October 1984. Rajiv Gandhi was assassinated on May 21, 1991 by erstwhile Tamil Tigers\' suicide squad during a poll campaign at Sriperumbudur in Tamil Nadu.