Portland, Oregon police say a body found in a car trunk is “likely” that of a missing 89-year-old woman, although a definitive identification of the body is being done by the state medical examiner today.

Marcine Herinck was reported missing on Sept. 19 from her home in northeast Portland.

The car’s driver, 58-year-old Timothy Mackley, has been arrested for murder.

Police say information developed Monday identified Mackley as a person of interest in Herinck’s disappearance, and that the body was found in his trunk during a Tuesday traffic stop.

Court records show Mackley is a convicted felon and has been diagnosed with schizophrenia and bipolar disorder.