Lt. Gov. Mark Robinson, the embattled Republican nominee for governor in North Carolina, was being treated for burn injuries on Friday night after an incident at a campaign event hosted at a truck show in Mount Airy, N.C., according to his spokesman and his political consultant.

Mike Lonergan, Mr. Robinson’s spokesman, said in a text message that the lieutenant governor was “in good spirits.” His consultant, Matt Hurley, echoed that message on Friday night on the social media platform X.

At about 5 p.m., Mr. Robinson attended the Mayberry Truck Show in Mount Airy, where dozens of large trucks parade down a street. It was unclear how Mr. Robinson had been injured.

He had spent much of Friday campaigning across the state, including at the headquarters of the Republican Party in Moore County, a Golden Corral restaurant in Laurinburg and a Mexican restaurant in Rockingham.

Mr. Robinson’s campaign has been in turmoil since a CNN report last week linked him to disturbing comments on a porn site. He had told supporters in Moore County on Friday morning that he would remain in the race, defying calls for him to drop out.