Sen. Bernie Sanders was hospitalized Tuesday night and has canceled all events until further notice. Sanders was at a campaign event in Las Vegas when, according to campaign officials, the senator began to feel chest discomfort and sought a medical evaluation.

Sanders was given two stents in order to unblock an artery, which was discovered during the evaluation.

"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," Sanders’ senior adviser Jeff Weaver said on Wednesday in a statement reported by ABC News. "Sen. Sanders is conversing and in good spirits. He will be resting up over the next few days."

According to an Associated Press report, a stent procedure is generally performed to immediately improve symptoms, such as chest pain or shortness of breath. A small wire mesh tube is put in place through blood vessels in either the wrist or groin and is used to keep arteries open.

During the senator's previous run for president in 2016, Sanders released a letter from Rear Adm. Brian P. Monahan, who is the attending physician of the United States Congress, that cited a history of mildly elevated cholesterol but no heart disease.

Those in attendance at his Las Vegas event did not seem to notice anything out of the ordinary in the way the Senator seemed to be acting on stage. Tick Segerblom, a Clark County, Nevada, the commissioner said to the Associated Press that Sanders seemed fine at the time.

“He spoke well. He jumped up on the stage. There was just nothing visible,” Segerblom said.

Sanders was scheduled to join other Democratic candidates in Las Vegas at a gun safety forum Wednesday presented by March for Our Lives and Giffords.