GORMAN, Calif. (AP) — Los Angeles County authorities say they’re looking for a man and woman suspected of killing a woman, kidnapping her three small children and leaving the state.

The Sheriff’s Department said in a statement Tuesday that arrest warrants have been issued for 27-year-old Joshua Robertson and 22-year-old Brittany Humphrey.

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They are suspected of killing Kimberly Harvill, whose body was discovered Sunday in brush along a remote road in northern LA County.

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Authorities believe the suspects also kidnapped Harvill’s three children, 2-year-old Joslynn Watkins, 3-year-old Brayden Watkins and 5-year-old Rylee Watkins.

They believe the couple is in the victim’s 1999 green Ford Explorer SUV.

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Authorities say Robertson has a criminal history and is on probation. They did not say what relationship there was, if any, between the murder victim and the suspects.