Former U.S. president Bill Clinton was been taken to the Columbia campus of New York Presbyterian Hospital late last night with chest pains, U.S. media said.
CNN cited two sources close to the former president, 63, as saying he was suffering from chest pains.
Clinton aide Douglas Band said in a statement that Clinton underwent a procedure to place two stents in one of his coronary arteries.
"President Clinton is in good spirits, and will continue to focus on the work of his foundation and Haiti's relief and long-term recovery efforts," the statement said.
Clinton underwent a heart bypass in 2004.
The former president has been working in recent weeks to help relief efforts in Haiti.
His wife, Secretary of State Hillary Rodham Clinton, met with President Barack Obama as scheduled yesterday, but was reportedly heading to New York from Washington to be with her husband.
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