An antinuclear citizens' group led by Nobel laureate Kenzaburo Oe and other prominent figures will hold rallies in Tokyo and four other prefectures Saturday in its drive to gather 10 million signatures opposing atomic energy.

The rallies will be held simultaneously in Tokyo and in Niigata, Kagawa, Yamaguchi and Ehime prefectures, which all host nuclear plants, as part of the group's "10 Million People's Action to Say Goodbye to Nuclear Power Plant" campaign.

The initiative has already collected about 4 million signatures in support of abolishing the nation's 54 commercial reactors, the group's executive committee said earlier this week.