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.

READ MORE: Belle Isle Park Reopens Giant Slide Friday

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

READ MORE: Woodward Dream Cruise Kicks Off This Weekend: What To Know

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

Dingell is said to be “resting comfortably.”

MORE NEWS: Federal Judge Retains Jurisdiction In Lawsuit Over Enbridge Pipeline

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