Ruth Todd, a spokesman for The Church of Jesus Christ of Latter-Day Saints, added that Ward was "currently on life support and is not expected to live."
"Every member of the church feels the loss of a missionary. We are deeply saddened, and share with his family, friends and fellow missionaries in their grief. We extend to them our love, our prayers and our deepest sympathy," Todd added.
Meanwhile, John Floyd, a 20-year-old LDS missionary from Deep Run, N.C., was discharged Wednesday at Bingham Memorial Hospital in Blackfoot, Idaho. He is recovering from numerous scrapes and bruises.
ISP said the accident occurred just before 6 p.m. Tuesday on State Highway 39 near Rockford, when the 2013 Chevrolet Cruze driven by Floyd allegedly failed to yield at a stop sign at the intersection with 100 South in Bingham County.
The Cruze was struck on the passenger side by a 2010 Ford F-350 pickup truck. The 23-year-old Blackfoot driver of the pickup was not seriously injured.
ISP said all occupants were wearing their seat belts.
Ten missionaries have died this year, according to an LDS church news release.