A 21-year-old woman was killed Wednesday morning in a crash along Interstate 15 in Escondido, the California Highway Patrol said.
The crash happened just after 4:30 a.m. on southbound I-15 at Citracdo Parkway. CHP said a person in a Honda SUV struck a Freightliner box truck in its rear for reasons still under investigation.
The Honda was driven by a 23-year-old woman while the box truck was driven by a 44-year-old man. Neither driver was injured in the crash, but the Honda's 21-year-old passenger died at the scene.
No other cars were involved in the crash.
About 15 minutes later, CHP shut down traffic around the scene of the accident. The freeway lanes were reopened at about 7 a.m.
At this time, authorities do not believe "impairment" was a factor in the crash.
No further details were immediately released. The investigation is ongoing.