The San Diego Police Department is in mourning after one of their own was killed in a crash east of Dulzura.

Detective Larry Steward was riding his motorcycle on Highway 94 near Marron Valley Road Thursday night when an SUV hit him head-on.

The California Highway Patrol said the SUV swerved to avoid stopped traffic from a Caltrans construction zone.

The SUV driver is being held on suspicion of vehicular manslaughter.