U.S. Rep. Ken Buck was taken to a Washington,D.C.-area hospital Wednesday morning after complaining of chest pains.

According to The Hill’s Scott Wong, Buck, R-Windsor, went to the hospital while attending a congressional baseball practice. Wong reported that he was told by fellow members of the House Freedom Caucus that Buck is “laughing in typical Ken Buck fashion” and “doing very well.”

In a text to Colorado Politics, Buck said he was “doing great.” It’s unknown whether he is still in the hospital.

Buck’s communications director, Brittany Yanick, has not yet returned requests for comment, nor have officials with the Colorado Republican Party.

Buck was elected chair of the Colorado Republican Party in March.

Buck was elected in November 2014 to represent the 4th Congressional District, after serving as Weld County District Attorney. He has had serious health problems in the past.

In March 2013, he announced he had been diagnosed with stage-four, non-Hodgkins lymphoma, a form of cancer. In August 2013, after chemotherapy, he said the lymphoma was in remission.

This story will be updated as new developments arise.