Lionel Richie remains hospitalized in the intensive care unit, and doctors are reportedly now looking into him potentially suffering from heart problems.

The singer, 77, is undergoing testing for cardiac-related issues, TMZ reported Tuesday.

He’s expected to be released from the hospital Wednesday, according to the outlet.

Page Six has reached out to Richie’s rep for comment.

Lionel Richie, seen here in 2024, is still in the hospital after checking himself in over the weekend. Getty Images for The Recording Academy

The singer is reportedly being tested for cardiac-related issues. (Pictured here performing in 2026.) Getty Images

The “American Idol” judge checked himself into a local hospital in St. Louis, Missouri, over the weekend after he struggled to finish his concert at the Muny Amphitheater Saturday.

Doctors were reportedly looking into “slight dehydration” as the cause.

During the concert, the Grammy-winning musician had to ask for a chair while performing his final song, “All Night Long,” so that he could sit down.

Richie addressed his dehydration issues and June hospitalization during the concert, according to the St. Louis American.

During his show on Saturday, seen above, he asked for a chair. auraslifeadventure/TikTok

He sat down while performing “All Night Long.” auraslifeadventure/TikTok

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“Some things have been happening on this tour that kind of shook me up a little bit, because I couldn’t figure out what the hell was going on,” he told the audience, adding, “I went back to the doctor, and he said, ‘You are suffering from dehydration.’”

He was previously hospitalized in June after he fell ill onstage and abruptly ended his concert early at the Grand Casino Arena in St. Paul, Minnesota.

Videos shared online at the time showed Richie — who is co-headlining his 26-city North American tour with Earth, Wind & Fire — being forced to sit down several times while singing “Dancing on the Ceiling.”

“When you’re feeling dizzy, sit your ass down,” he told the crowd, before he left the concert altogether.

Richie, seen in 2022, was reportedly experiencing slight dehydration when he went in. WireImage

He’s expected to be released on Wednesday. (Pictured: Richie on “American Idol.”) Disney via Getty Images

Richie then canceled two concert shows in Chicago and Columbus, Ohio.

However, Richie assured fans he was fine in a July 4 Instagram post.

“Thank you for every message, every kind word, and for all your love. ❤️,” he wrote. “I’m doing well, and I’m grateful for all of you.”

The father of three has yet to comment on his latest hospitalization.