Foreign Minister Hirofumi Nakasone has expressed concern over the indictment of detained prodemocracy leader Aung San Suu Kyi and called for Myanmar's military junta to give her humanitarian treatment.

Nakasone conveyed his concern to Myanmar's foreign minister, Nyan Win, during telephone talks Monday, officials said.

Suu Kyi, 63, has been charged in connection with an incident earlier in the month in which a U.S. citizen is accused of swimming across a lake and sneaking into her house to visit her.

Suu Kyi, a Nobel Peace Prize winner, has been kept under house arrest since 2003. Her trial began Monday at a court inside Yangon's notorious Insein Prison.