Joe Jackson Doing 'Much Better' Amid Sudden Hospitalization

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Joe Jackson seems to be on the mend after a routine checkup gone bad.

ET confirms that the 87-year-old Jackson family patriarch was admitted to a Los Angeles hospital on Friday after he became weak and began running a high fever during a regularly scheduled checkup with his doctor. TMZ first reported the news, along with a video interview with Joe's son, Jermaine Jackson, conducted on Saturday.

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"We were all worried, but he's doing much better. He's much healthier and we're very happy about that," Jermaine says to the camera, confirming details about Joe's hospitalization but denying any other underlying illnesses.

"All his vital signs are great," Jermaine says. "He's just tired. He's 87. We're just tryin' to hold onto him as long as we can."

Jermaine goes on to praise his father's spirit, saying: "He's up there telling jokes! He's very strong. He's doing just fine."

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As ET previously reported, Joe suffered a stroke on his 87th birthday in July 2015 while traveling in Brazil. The health scare prompted daughter Janet Jackson to halt production on her The Unbreakable World Tour. 

News of Joe's current hospitalization comes just as Janet celebrated her 50th birthday on May 16. Earlier this month, ET broke the news that Janet is currently expecting her first child with husband Wissam Al Mana.

WATCH: Janet Jackson Expecting First Baby at 50!