Former President George H.W. Bush is in stable condition after being moved to an intensive care unit and undergoing a procedure, his spokesman said in a statement Wednesday.

Bush, who is 92, was moved to the ICU at Houston Methodist Hospital, where he was admitted over the weekend, to "address an acute respiratory problem stemming from pneumonia."

"Doctors performed a procedure to protect and clear his airway that required sedation," spokesman Jim McGrath said in a statement.

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"President Bush is stable and resting comfortably in the ICU, where he will remain for observation."

Bush's wife, Barbara Bush, was also admitted to the hospital Wednesday morning "as a precaution after experiencing fatigue and coughing," the spokesman said.

Here is our update on President and Mrs @GeorgeHWBush. pic.twitter.com/zsoIHE4FlX — Jim McGrath (@jgm41) January 18, 2017

George H.W. Bush and his wife will not be attending President-elect Donald Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE's inauguration later this week due to health reasons.

The former president wrote in a letter to the president-elect that his doctor told him if he sat outside in January it would likely put him "six feet under."