Pueblo, Colo., Jun 24, 2019 / 12:01 pm (CNA).- A charter bus carrying members of a Catholic group from New Mexico crashed Sunday in southern Colorado, killing at least two people including the driver and injuring more than a dozen others.

The group, high schoolers from Aquinas Newman Center at the University of New Mexico in Albuquerque, had been in Denver for the weekend attending Steubenville of the Rockies, an annual Catholic youth conference.

Among the dead is Jason Paul Marshall, a seminarian of the Archdiocese of Santa Fe. Marshall was studying theology at the Pontifical College Josephinum in Columbus, Ohio.

The crash occurred on Interstate 25 around 2:30 pm June 23 about ten miles north of Pueblo. The bus struck part of a bridge structure and went off the highway into a ditch.

Colorado State Patrol reported that the 22-year-old driver, whose identity has not been released, was ejected from the bus and died. Thirteen other passengers sustained injuries ranging from minor to critical, CSP reported.

A total of 14 ambulances and three medical helicopters were called to the scene to assist. Authorities said the driver may have had an “unspecified medical issue” that contributed to the crash, but the cause of the accident is still under investigation.

The Pueblo County Coroner will release the identities of the victims after next of kin have been notified, the La Junta Tribune Democrat reported.

Archbishop John Wester of Santa Fe will be celebrating a Mass of Healing June 26 at the Newman Center for the victims of the crash. A call from CNA to the Archdiocese of Santa Fe on Monday morning went unanswered as of press time.

Around 30 remaining members of the Newman Center group were able to attend Mass Sunday evening at the Cathedral Basilica of the Immaculate Conception in Denver. Father Robert Fisher offered prayers for the victims of the crash during Mass.

“Please pray tonight for a Catholic group from New Mexico who were involved in a tragic bus accident this afternoon in Pueblo,” the Archdiocese of Denver said on Facebook.

“The group had attended the Steubenville of the Rockies Youth Conference in Denver and was on its way home. We send our prayers and deepest condolences to the families and friends of those who were killed, and our prayers for healing and comfort for those who were injured.”