Authorities have released the names of four Guatemalan men who were fatally injured in a collision in foggy and icy conditions in eastern Nebraska's Douglas County.

The accident occurred about 5 a.m. Friday on U.S. Highway 275 just west of Waterloo. The four were in a car that cross the center line and slammed into an oncoming pickup. The pickup driver was hospitalized in Omaha.

The Douglas County Sheriff's Office identified the four as Manuel Leon Lopez, Pedro Soc Ortiz, Gabriel Ralias Juarez and Mario Alvarez Simaj. All four lived in Fremont and worked at a packing plant in south Omaha.

The sheriff's office says the four men were working under assumed names.