Willie Nelson abruptly ended his concert in San Diego this weekend after coughing and experiencing breathing difficulties during the first song of his performance.

The incident was first reported by the San Diego Union Tribune.

According to the newspaper, concert attendants say the 84-year-old music legend left the stage in the midst of concert opener "Whiskey River" and did not return.

Nelson's publicist told the paper that the icon has either "a bad cold or the flu" and would be returning to Texas to recover.

The representative also confirmed that Nelson would be canceling the remainder of his shows scheduled for January. He was slated to perform in Palm Springs, Las Vegas, and Laughlin, Nevada.

An email explaining the cancellations from Ticketmaster says in part that "[u]nfortunately, due to illness, Willie Nelson's performance concluded early.”

Nelson's next scheduled dates begin February 7 in Macon, GA, with seven other performances expected throughout the month. His next Texas performance is planned for April 20.