Senator Thom Tillis of North Carolina collapsed while competing in the ACLI Capital Challenge, a three-mile race in Washington, D.C., on Wednesday morning.
According to the Associated Press, Tillis was given CPR before being taken away by an ambulance.
Fox News reports Tillis, 57, was seen breathing as he left the scene.
TV anchor Debra Alfarone of WUSA 9 tweeted that the collapse happened after the race’s second mile, when the senator “stopped breathing and 3 runners saved him.”
Tillis shared a video on his Twitter page soon after the reports broke from a hospital bed giving an update on his recovery and disputing reports that CPR was performed.
“Hey, everybody. I’m fine,” he said. “Just running, about two and a half miles in, got overheated. No CPR, no special measures – just checking me out. See you back on the Hill.”
About an hour before the incident, a photo of Tillis and other runners was shared on his Twitter account. It also said he was participating in the race in support of Fidelco Guide Dogs.
“Team Tillis is ready for the @ACLINews #CapChallenge in support of @fidelco,” the caption read.
Marco Rubio and Ted Cruz led the messages of support for the senator’s recovery.
Rubio tweeted, “Please pray for my Senate colleague @ThomTillis.”
“Hope you’ll join Heidi and me in lifting up @ThomTillis in your thoughts and prayers,” Cruz wrote.