Authorities say a van carrying mostly college-age members of a Colorado church group overturned on black ice early Thursday in eastern Oregon, killing one person and injuring 15, some critically.

The crash happened at about 5:20 a.m. on Interstate 84 near Baker City.

Oregon State Police Lt. Gregg Hastings says most of the occupants were ejected. Five of the injured were taken to a hospital in Boise, Idaho; three were taken to a hospital in La Grande; and seven were treated and released from a hospital in Baker City.

The van was carry members of the New Life Worship Center in Federal Heights, Colo. Center spokeswoman Christy Gimer says the group was on its way to a Microsoft conference in Portland to earn money working as ushers and doing other tasks.

She declined to identify the survivors but said they were from all over the country, plus one woman from Iraq.