One person died Saturday in a head-on collision in Santa Ana, police said.

Santa Ana Police received reports of a crash between a Chevrolet Tahoe and a Nissan Versa around 9:53 p.m. A preliminary investigation found that the Nissan was traveling westbound on 5th Street over the riverbed when it drifted into the opposite lane of traffic.

After drifting, it hit the Chevrolet head on.

Police said the driver of the Nissan, a woman, died at the scene. Her identity was not immediately released, pending notification of next of kin.

The woman driving the Chevrolet and her toddler, who was a passenger, were both unharmed. She remained at the scene and cooperated with investigators, according to authorities.

The cause of the crash, including whether drugs and alcohol were involved, is under investigation.

The Santa Ana Police Department’s Collision Investigations Unit (CIU) is investigating this incident. Anyone with information is asked to contact Detective Sergeant Richard Shin at 714-245-8294 or the Santa Ana Police Department’s Traffic Division at 714-245-8200.