At least one person was dead and three were injured early Sunday morning in a two-vehicle crash on Imperial Highway in Brea, police said.
Authorities became aware of the collision around 2:40 a.m. when an officer on patrol came across the scene on State Route 90, also known as the Imperial Highway, near the intersection with Kraemer Boulevard, according to Brea Police Department Lt. Peter Rodriguez.
Investigators determined a woman was driving her Toyota Corolla southbound on Kraemer Boulevard when she ran a red light, causing her to strike a Ford Fusion carrying three people that was traveling east on Imperial Highway, according to a Facebook post from Brea police. One car had jumped the curb and slammed into a tree while the other was on the sidewalk across the street, footage from the scene showed.
The woman had not been wearing a seatbelt and was ejected from her car, officers said. She was declared dead at the scene.
The three people in the Fusion — two men and a woman — were transported to the UC Irvine Medical Center with serious injuries that were not life-threatening, authorities said. They were all expected to survive.
The victims' identities were unknown.
Investigators were still working to determine whether drugs or alcohol could have played a role in the incident.
The Kraemer Boulevard and Imperial Highway were closed in the area of the crash at about 3 a.m. but reopened just before 9:30 a.m.