GARDINER, Maine (AP) — Investigators believe a woman was killed in Massachusetts before being placed in a trunk and driven to Maine, where the driver killed himself.

State police identified the driver who took his life in a traffic stop in Gardiner, Maine, as 34-year-old Gyrth Rutan of Sturbridge, Massachusetts. State police declined to identify the woman whose body was in the trunk of his Subaru.

The episode unfolded Thursday with a report of a car driven erratically on I-295 in Maine. Police stopped the car in Gardiner, where Rutan stepped out and shot himself in the head.

State Police say it's unclear why Rutan drove to Maine, but he appears to have family in the state. A spokeswoman for Worcester County district attorney's office in Massachusetts said the investigation is "active and ongoing."