UPDATED: SoCal Students Involved in Deadly NorCal Bus Crash

Five students and five adults were killed when a bus ferrying Southland students scheduled to visit Humboldt State University collided with a big rig in Northern California, sparking a spectacular fire, authorities said today.

The adults killed in the crash included the two drivers and the three chaperones accompanying Los Angeles-area high school seniors, the California Highway Patrol reported. A CHP dispatcher said five students were confirmed among the dead, along with the drivers of both vehicles.

None of the victims has been identified.

The students were scheduled to visit Humboldt State University in Arcata when their bus, which was chartered by the university, collided with the big rig on Interstate 5 near the town of Orland around 5:30 p.m. Thursday. The 48 occupants included 44 students, according to the Los Angeles Unified School District.

The LAUSD said that on the bus were 19 students from 16 LAUSD schools -- San Fernando, Grant, Dorsey, Fremont, City of Angels, Robert F. Kennedy Community Schools, Manual Arts, Banning, Carson, Chavez, Diego Rivera, Belmont, Wilson, Chatsworth, Jefferson, and Middle College.

Counselors will be at each campus today to assist students and parents, according to LAUSD officials.

CHP spokeswoman Tracy Hoover said 34 of the bus occupants were hospitalized. Other CHP dispatchers said more than 15 of those patients were being treated for major injuries.

The collision occurred when a southbound FedEx big rig towing two trailers crossed into the northbound lanes, sideswiping a car and colliding head-on with the tour bus, around 5:30 p.m. Thursday.

The tour bus was carrying students who were en route to a campus visit at Humboldt State University in the city of Arcata.

Jonathan Gutierrez, a student at Banning High (from the Los Angeles area) who was aboard the bus, tweeted that he had sustained "bruised leg, eyebrow cut open, scratches all over my arm & all my stuff that I packed is burned. i'm beyond thankful that I'm still here."

The bus was carrying 48 people, including three chaperones and the driver.

The injured were being treated at five area hospitals, Joyce Lopes, the Humboldt State vice-president for administrative affairs said. She said the university had chartered three buses for the campus tour. One was for students from Fresno. The other two carried students from Los Angeles.

Lopes said the students had been assigned to buses "largely, but not entirely" on an alphabetical basis. Some students with names earlier in the alphabet had left Los Angeles on the second bus, she said, adding that the buses had been due to arrived at the university around 7 p.m. Thursday.

The second L.A. bus arrived safely, and counselors were made available for the students, Lopes said.

LAUSD spokesman Tommy Chang said the principals of the involved schools have been informed of developments.

Hoover, the CHP spokeswoman, said the collision sequence began with the big rig crossing into the northbound lanes for an unknown reason, side-swiping a white sedan and then colliding with the bus. This was followed by an "immediate explosion," she said.

The bus was owned by Silverado Stages of San Luis Obispo. A statement on the company's website said it was helping authorities gather information regarding the accident.

"Our top priority is making sure the injured are being cared for," the statement said.

Investigators from the National Transportation Safety Board were on sent to the site.

Humboldt State University said the prospective students were en route to a spring preview day scheduled for today -- part of a two-day visit to the Arcata campus.

The students were participants in the university-funded Preview Plus program, which brings low-income and first-generation prospective students from the Los Angeles and San Francisco areas to the campus, according to Humboldt State.

Families of students who may have been affected were advised to contact university police at (707) 826-6327 for further information or guidance. The Red Cross has established a support site in Orland for victims of the crash at the Orland Veterans Memorial Hall.

The American Red Cross was assisting in the reunification of students and parents, and it appeared that the parents of some of the students had been re-united with their children. Banning High's Jonathan Gutierrez tweeted at 2:44 a.m.,  "so relieved to have my dad here."