ALLENTOWN, Pa. (AP) — Authorities have identified four of the five co-workers killed in a fiery crash when their car slammed head-on into a tractor-trailer as they were on their way home from work.

Officials said the crash in Lehigh County occurred Wednesday afternoon on state Route 222 when the sedan carrying the victims crossed into the path of a southbound truck in Upper Macungie Township near Allentown.Coroner Scott Grim said fingerprints were used to identify 59-year-old Rosa Lajara-Marine of 34-year-old Mercedes Silvestre Castillo. He said dental records helped identify 19-year-old Jessegel Diaz-Hernanez and 30-year-old Barbara Bruno Rondon. All four were residents of Allentown.DNA tests are being done to try to identify the fifth victim, a man. All of the deaths were ruled accidents. Local and county authorities are investigating the crash.