(RNN) - Arnold Schwarzenegger is in stable condition Friday following heart surgery.
Daniel Ketchell, a spokesman for the actor and former governor, said the emergency surgery was needed to fix an issue with a catheter valve replacement, according to multiple news outlets.
Ketchell said more information would be released later in the day.
Schwarzenegger is a former Mr. Olympia, governor of California and actor with a lengthy list of credits, including the "Terminator" franchise.
The bodybuilder turned actor served as governor of California from 2003 to 2011 and has remained active in politics and entertainment, including appearing in "Terminator" films, the newest planned for 2019, according to the Hollywood Reporter.
An action star, also appeared in the "Conan" films, "Predator," "Commando," and "Total Recall," as well as comedies such as "Kindergarten Cop" and "Twins."
People often perform throaty impressions of his most famous lines, such as "Get to the chopper" and "Put the cookie down."
Schwarzenegger underwent open-heart surgery in 1997 for a congenital heart defect, CNN reported.
Making an appearance at SXSW in March, he said he was preparing to sue oil companies "for first degree murder" over climate change "for knowingly killing people all over the world," Politico reported.
He was supposed to attend a Tame the Gerrymandering rally on Wednesday but couldn't make it, though he posted a message of support.
While @Schwarzenegger couldn't make it to our #SCOTUS rally today, he did send this message urge you all to keep up the fight to #terminategerrymandering! https://t.co/zjYR67BzS7
— Tame the Gerrymander (@TameGerrymander) March 28, 2018
As governor of California, he focused on topics such as reducing California's greenhouse gas emissions, increasing the minimum wage and updating the workers' compensation system, the state's biography said.
A moderate Republican, he has gotten into Twitter spats with President Donald Trump, disagreeing with him on a number of subjects, including climate change.
Schwarzenegger's foray as Trump's replacement on "The Apprentice" was short-lived, and Trump hit at him for poor ratings in February 2017.
He responded via a YouTube message, suggesting they switch jobs: "You can take over TV, because you're such an expert at ratings, and I can take over your job so people can finally sleep comfortably again."
However, even if Trump were to take him up on it, Schwarzenegger, being a naturalized citizen, is barred by the Constitution from serving as president.
Schwarzenegger was born in Thal, Austria on July 30, 1947, immigrated to the U.S. in 1968 and became a U.S. citizen in 1983.
He was married to Maria Schriver from 1986 to 2011, and has four children.
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