“My homage to all those who lost their lives in Hiroshima. The bombings remind us of the horrors of war & their effect on humanity,” Modi said in a tweet.
Modi said the solutions to humanity lie in peace and progress.
“Let us walk shoulder to shoulder to create a peaceful world, free from violence,” the prime minister said.
Japan marked the 70th anniversary of the first atomic bomb being dropped by a US aircraft in Hiroshima killing at least 140,000 people in the city.