Sen. Thom Tillis (R-N.C.) collapsed while running a race in Washington, D.C., Wednesday morning, according to The Associated Press.
A spokesperson for the race told Lori Denberg of ABC News that Tillis had a seizure but was not hurt when he fell, and that he was alert while on his way to the hospital.
Tillis had tweeted earlier Wednesday that he was taking part in the American Council of Life Insurers Capital Challenge, a three-mile team race in Anacostia Park.
WUSA9?s Debra Alfarone tweeted a photo of Tillis being helped during the race.
Tillis? office did not immediately respond to a request for comment. The senator?s office told WFMY that it had ?no comment? on Tillis? condition.
Sen. Marco Rubio (R-Fla.) tweeted a message of support for Tillis Wednesday morning.
This is a developing story and will be updated.
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