The Placer County Sheriff's Office is investigating a homicide and subsequent officer-involved shooting that started in Auburn early this morning. Around 12:45 am, residents on Garnet Way in Auburn reported seeing the suspect, 34 year old Daniel Espinoza, struggling with his girlfriend in their car. A short time later, neighbors heard a gunshot from inside the apartment. The victim, Espinoza's girlfriend, was shot and killed. Espinoza fled to a house in Newcastle. Placer County sheriff's deputies searched the Newcastle Cemetery area and were allegedly ambushed by Espinoza. They returned fire, missing Espinoza, who ran out of ammunition. Deputies arrested him without anyone getting injured. Espinoza has been booked at the Placer County Jail on charges of murder and the attempted murder of two deputies.