WASHINGTON, D.C., USA — Mark Knoller, a CBS News correspondent who was best known for covering the White House for decades, has died. He was 73.

CBS News reported on his death Saturday, but said a cause was not released and he had been suffering from diabetes and was in "ill health."

"Mark Knoller was the hardest-working and most prolific White House correspondent of a generation," Tom Cibrowski, president and executive editor of CBS News, said in a statement . "Everyone in America knew his distinctive voice and his up-to-the-minute reporting across eight Presidential administrations."

Those administrations included the last year of President George H.W. Bush's term and both terms of Presidents Bill Clinton, George W. Bush and Barack Obama. He also covered Trump's first term before l

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