(CNN) Rep. John Conyers, who is under fire for accusations of sexual harassment, is in the hospital Thursday, an aide to Conyers told reporters.

Political consultant Sam Riddle said Conyers was hospitalized due to stress, according to CNN affiliate WDIV.

"I just spoke with Monica Conyers on the phone and we want you to know that the congressman is resting comfortably in an area hospital. He's doing OK, as well as he can be expected for a gentleman that's approaching 90 years of age," Riddle said. "The congressman's health is not what it should be and lot of that is directly attributable to this media assault."

A separate aide to Conyers confirmed to CNN that the Michigan Democrat was in the hospital. Neither was able to give additional details about Conyers' condition or where he was, though Conyers was in his home district at the time.

Conyers, 88, is the longest currently serving member of the US House of Representatives.

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