HOLTVILLE, Calif. (AP) — Authorities are investigating whether human smuggling was involved after a crash Tuesday involving an SUV packed with 25 people and a tractor-trailer that left 13 people dead and bodies strewn across a roadway near the U.S. Mexico border. When police arrived, some of the passengers were trying to crawl out of the crumpled 1997 Ford Expedition while others were wandering around the fields. The rig's front end was pushed into the SUV's left side and two empty trailers were jackknifed behind it.