Nobody was injured after a tour bus carrying sixth-grade students from the Denver area caught fire on the highway in Utah Friday morning.

At about 9:30 a.m., the bus experienced a mechanical issue while driving on State Route 191 south of Moab, Utah Highway Patrol confirmed on Saturday. The driver then pulled the bus over and all 36 people inside evacuated.

Shortly after everyone had gotten out of the bus, it caught on fire, quickly becoming fully engulfed in flames police added. The roadway was closed for about an hour while crews extinguished the flames.

Police did not say what school the bus was from, but Dan O’Neill, teacher for Graland Country Day Pre-K – 8 school, made a post about the incident on his Facebook account.

“I was on this bus with students, colleagues, and a heroic driver named Sabrina. We all acted swiftly and with purpose,” O’Neill said in the post. “I don’t have a ton of words to describe those moments, but I am completely feeling it in a thousand ways this morning.”

The students had been camping in the area, police said. After the incident, a local school district sent a different bus to transport everyone to a junior high school in Grand County. The tour bus company then sent another bus to take them back to Denver

O’Neill declined to speak further on the matter on Saturday. Graland did not respond to a request for comment on the issue Saturday.

Denver Gazette reporter John Moore contributed to this report.