A Whittier man suspected of racing with another driver on the I-5 Freeway and causing a multi-vehicle crash that killed three people, including two Santa Clarita teens, was charged Tuesday with second-degree murder and other counts, the Los Angeles County District Attorney’s Office announced.

Dealio Lockhart, 35, is scheduled to be arraigned late Tuesday afternoon in Department 30 at the Foltz Criminal Justice Center. Prosecutors will ask that bail be set at $3.2 million.

Deputy District Attorney Michael Blake with the Target Crimes Division is prosecuting the case.

Lockhart is suspected of racing his Dodge Challenger with another driver shortly after midnight Saturday near downtown Los Angeles. One of the vehicles lost control, causing a UPS truck to go airborne and land over the center median.

Killed were Brian Lewandowski, 18, the son of a Los Angeles County Sheriff’s Department homicide detective, and Michelle Littlefield, 19, both passengers in a Nissan that had its top sheared off by the UPS truck. The UPS driver, Scott Treadway, 52, also was killed.

In addition to the three fatalities, four others were seriously injured. Two males in the Nissan were injured and remain in critical condition. A man and a woman who were in separate cars also were injured.

Lockhart is charged with three counts of second-degree murder and four counts of reckless driving on a highway causing a specified injury.

If convicted, Lockhart faces up to life in state prison.

The case remains under investigation by the California Highway Patrol.