Hiroshima marks atomic attack's anniversary (VIDEO, PHOTOS)

Hiroshima is marking the anniversary of the 1945 atomic bombing of the city with tens of thousands of residents, visitors, blast survivors and their relatives having gathered at the Peace Memorial to commemorate the victims.

­Monday marks 67 years since an American B-29 bomber, the Enola Gay, dropped a nuclear bomb on the Japanese city of Hiroshima.

A bell toll set off at 8:15 am local time – the time of detonation – announcing a moment of silence. 

About 50,000 people have gathered for an official ceremony, while thousands more joined other commemoration events held across the city.

Anti-nuclear protesters stage a demonstration march near the Hiroshima Peace Memorial Park on August 6, 2012 as the city marks the 67th anniversary of the atomic bombing (AFP Photo / Kazuhiro Nogi)
Anti-nuclear protesters stage a demonstration march near the Hiroshima Peace Memorial Park on August 6, 2012 as the city marks the 67th anniversary of the atomic bombing (AFP Photo / Kazuhiro Nogi)
Japanese riot policestand guard as anti-nuclear protesters (behind holding banners) stage a demonstration march near the Hiroshima Peace Memorial Park on August 6, 2012 as the city marks the 67th anniversary of the atomic bombing (AFP Photo / Kazuhiro Nogi)
Japanese riot policestand guard as anti-nuclear protesters (behind holding banners) stage a demonstration march near the Hiroshima Peace Memorial Park on August 6, 2012 as the city marks the 67th anniversary of the atomic bombing (AFP Photo / Kazuhiro Nogi)
People pray at the memorial cenotaph for victims of the 1945 atomic bombings at the Hiroshima Peace Memorial Park in western Japan early on August 6, 2012 (AFP Photo / Kazuhiro Nogi)
People pray at the memorial cenotaph for victims of the 1945 atomic bombings at the Hiroshima Peace Memorial Park in western Japan early on August 6, 2012 (AFP Photo / Kazuhiro Nogi)
Japanese Prime Minister Yoshihiko Noda (2nd R) walks after offering a wreath of flowers at the memorial cenotaph for victims of a 1945 atomic bombing during a memorial ceremony to mark the 67th anniversary at the Hiroshima Peace Memorial Park in western Japan August 6, 2012 (AFP Photo / Kazuhiro Nogi)
Japanese Prime Minister Yoshihiko Noda (2nd R) walks after offering a wreath of flowers at the memorial cenotaph for victims of a 1945 atomic bombing during a memorial ceremony to mark the 67th anniversary at the Hiroshima Peace Memorial Park in western Japan August 6, 2012 (AFP Photo / Kazuhiro Nogi)
People gather to pray and leave flowers at the memorial cenotaph for victims of a 1945 atomic bombing at the Peace Memorial Park in Hiroshima on August 5, 2012 (AFP Photo / Kazuhiro Nogi)
People gather to pray and leave flowers at the memorial cenotaph for victims of a 1945 atomic bombing at the Peace Memorial Park in Hiroshima on August 5, 2012 (AFP Photo / Kazuhiro Nogi)