SAN JACINTO (CNS) - One person was killed when a big rig and a pickup crashed head-on on Gilman Springs Road between San Jacinto and Moreno Valley, authorities said today. The crash was reported at 10:47 p.m. Sunday at 34811 Gilman Springs Road at Eden Hot Springs Road in the San Gorgonio Pass, according to the California Highway Patrol. Five vehicles were involved in the collision, with the big rig bursting into flames, the CHP said. A person was pronounced dead at the scene, the CHP said. It was not clear in which vehicle that person was in. Paramedics assessed four people at the scene for injuries and they refused further treatment, according to the Riverside County Fire Department.