TOKYO — Mitsubishi Motors’ former Chairman, Osamu Masuko, died from “cardiac insufficiency” on Aug. 27, the Japanese automaker said in a statement on Monday. He was 71.

Masuko, a veteran of the Mitsubishi conglomerate, had just weeks after he resigned as chairman, citing health reasons for his decision to step down.

Masuko joined Mitsubishi Motors in 2004 and became president in 2007. He oversaw the creation of the partnership between Mitsubishi and Nissan.