A tour bus , big rig , two trucks are all involved in a collision on I-10 , California Highway Patrol says . All four fatalities were on the tour bus carrying five people , TV station says . It then fell down an embankment and landed on its side , the station said . A truck jackknifes and sends its load of metal parts spilling onto freeway , station says .
A tour bus , big rig , two trucks are all involved in a collision on I-10 , California Highway Patrol says . All four fatalities were on the tour bus carrying five people , TV station says . A truck jackknifes and sends its load of metal parts spilling onto freeway , station says .