On Saturday, the news broke that Yusuke “Wally” Yamaguchi has passed away at age 60.

Known as “Yamaguchi-san” in WWE, he was the manager for the Kaientai faction back in 1998.

Yamaguchi has been dealing with health issues since suffering a stroke back in 2017, however the exact cause of death has yet to be determined.

WWE.com issued the following statement on Yusuke “Wally” Yamaguchi’s passing:

Yusuke “Wally” Yamaguchi passes away

WWE is saddened to learn that Wally Yamaguchi, Japanese wrestling fixture and former Kaientai manager, has passed away at the age of 60.

Although primarily known to the WWE Universe as the villainous Yamaguchi-San during the late 1990s, Yamaguchi was a key figure in Japanese sports-entertainment during the 1980s, editing “Gong” Magazine and working with various Japanese promotions as a referee and an agent.

In addition to appearing onscreen as Kaientai’s manager, Yamaguchi also worked with WWE as its Japanese liaison. His brother, Shun Yamaguchi, is a Japanese television announcer for WWE’s pay-per-view broadcasts.

WWE extends its condolences to Yamaguchi’s family, friends and fans.

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.@WWE is saddened to learn that Yusuke “Wally” Yamaguchi has passed away. https://t.co/uK79QKxcBf

— WWE (@WWE) March 10, 2019