Anaheim police officers responded to the scene of a head-on crash in Anaheim Hills early on Sunday morning near the intersection of South Nohl Ranch Road and East Serrano Ave.

The crash involved two vehicles. The drivers of the two vehicles were killed in the collision, which happened at around 12:30 a.m.

The two vehicles were a Toyota Prius, which was overturned in the collision, and a Lexus sedan that had major damage to the front end.

Two passengers were transported to the hospital. The police are not sure which vehicle the passengers were riding in at the time of the accident.

Police investigators suspect that alcohol may have been involved in the collision. They also have not yet determined which driver was at fault.

The drivers’ names were not released pending notification of relatives.

The police closed the intersection for several hours as they investigated the collision.