Yoichiro Okazaki, chairman and CEO of Mitsubishi Motors Corp., will resign to take responsibility for poor earnings results following a string of defect coverups and recalls, sources said Saturday.

MMC President Hideyasu Tagaya and Vice Chairman Koji Furukawa are also expected to step down, the sources said.

Okazaki's successor has yet to be decided, but a Mitsubishi Heavy Industries Ltd. executive may replace him.