According to his campaign, Bernie Sanders is canceling events until `further notice' after he was hospitalized in Las Vegas, Nevada.

He was scheduled to host a town hall at California State University Bakersfield on Thursday.

"During a campaign event yesterday evening, Sen. Sanders experienced some chest discomfort. Following medical evaluation and testing he was found to have a blockage in one artery and two stents were successfully inserted. Sen. Sanders is conversing and in good spirits. He will be resting up over the next few days," said Sanders’ senior adviser Jeff Weaver on Wednesday in a statement. "We are canceling his events and appearances until further notice, and we will continue to provide appropriate updates.”

ABC News first learned from officials about the Vermont senator being hospitalized after his plans to attend a presidential gun forum changed. He is one of three septuagenarians in the Democratic primary, and the oldest.

Sanders last public campaign event was Monday in New Hampshire, where he held four back-to-back events through the state.

Shortly after announcing his presidential campaign in February, Sanders appeared on the campaign trail with a bandage on his head after being treated at a walk-in clinic for a minor injury while campaigning in South Carolina in mid-March. Sanders cut his head in the shower, according to the Associated Press, and after receiving a half-dozen stitches, the senator was given a "clean bill of health."