Hours before he was set to perform, Post Malone announced his Saturday show at TD Garden in Boston, Mass., had to be canceled.

In an apologetic statement posted on his social media accounts, the singer said he was hospitalized and having a "very difficult time breathing," citing stabbing pains whenever he breathes or moves.

"We're in the hospital now, but with this pain, I can't do the show tonight," the statement read. "I'm so [expletive] sorry."

He was injured last Saturday in St. Louis when he fell into a hole on stage that had just been opened to lower an instrument.

POST MALONE APOLOGIZES TO ST. LOUIS FANS AFTER ON-STAGE ACCIDENT

Post Malone

Post Malone, who recently fell into a hole on stage while preforming in St. Louis on Sept. 17, 2022, preforming in Rio de Janeiro on Sept. 4 2022. (AP Photo/Bruna Prado, File)

The singer said fans who purchased tickets to Saturday's show in Boston will be able to use them when the concert is rescheduled.

Entrance and walkway into an arena

A Google Earth image shows the north station entrance to TD Garden Arena in Boston, Mass. (Google Earth)

A new date has not yet been announced, but Post Malone said it is being planned "right now."

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"I feel terrible, but I promise I'm going to make this up to you," the statement read. "I love you Boston, I'll see you soon."

Post Malone performs

FILE - Post Malone performs during Wireless Festival 2018 at Finsbury Park on July 6th, 2018 in London, England. (Photo by Lorne Thomson/Redferns)

Post Malone is scheduled to continue his ‘Twelve Carat Tour’ in Cleveland, Ohio on Tuesday followed by performances in Pittsburgh on Wednesday and Detroit next Saturday.

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As of Saturday night, no other shows have been canceled.