UPDATE, 9:30 p.m.: One driver was taken to an area hospital after complaining of pain, according to Lieutenant Roy Nakamura of Arcadia Police.
Officers helped to remove the collision from near the intersection in roughly 30 minutes, Nakamura said.
Traffic investigators are continuing to figure out the reason for the collision.
PREVIOUSLY: Four vehicles were involved in a collision Sunday afternoon.
Little information is available at this time, but Arcadia Police reported bystanders were helping at least one person out of their vehicle, according to scanner reports.
The accident happened a little after 6 p.m. in the 600 block of West Duarte Road. Police quickly arrived to conduct traffic control while fire fighters arrived to begin helping people who may have been injured.
This story will continue to be updated as information becomes available.