Bells tolled in Hiroshima on Thursday for the 75th anniversary of the world's first atomic bombing, with ceremonies downsized due to the novel coronavirus and the mayor urging nations to reject selfish nationalism and unite to fight all threats.

Though thousands usually pack the Peace Park in central Hiroshima to pray, sing and lay paper cranes as a symbol of peace, the entrance was sharply limited and only survivors and their families could attend the memorial ceremony itself.