Son: I know who killed my stepfather

JEFFERSON, Maine - A body recovered from a shallow grave in Maine has been identified as a 51-year-old Jefferson man last seen alive 12 years ago.

The state medial examiner has ruled the death a homicide and now, the man's stepson says he believes he knows who the killer is.

The body of Charles Woodburn was found in the front yard of his former Jefferson home last week. Police say Woodburn lived with his wife, Diane Darling, at the house at the time of his 2002 disappearance. Darling died in 2010. Police say Darling never reported Woodburn missing, but family members did after she died.

The Portland Press Herald reports Brian Darling, Diane Darling's son, says his mother killed Woodburn.

Brian Darling says his mother remarried a man named Robert Guardette after Woodburn's disappearance and that Guardette told Brian about the killing after Diane Darling died.

However, Gaudette denies ever telling Brian Darling that Diane killed Charles Woodburn. He says Brian is bitter about an inheritance dispute.

Authorities have not released Woodburn's cause of death. The investigation is ongoing.