DETROIT (WWJ) – A heart procedure has former Congressman John Dingell in the hospital Tuesday.

Dingell, the longest serving member of Congress, was admitted to Henry Ford Hospital in Detroit yesterday.

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The 89-year old retired after opting not to seek reelection last year.

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His wife, Debbie Dingell, won his former seat and is traveling back to Michigan this week.

Dingell is said to be “resting comfortably.”

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Dingell was a member of the U.S. House of Representatives from 1955 until  2015.