The man charged with kidnapping Dylan and Shasta Groene and killing Dylan has confessed to the murders of three other children in Washington State and California. The confession was revealed in court papers filed by federal prosecutors supporting their effort to seek the death penalty in the Groene case.

According to the court papers, Duncan confessed to killing Carmen Cubias, nine, and Sammiejo White, 11, in Washington state in 1996 and Anthony Martinez, 10, in California in 1997.

Cubias and White were kidnapped from the Crest Motel in Seattle in July 1996. The remains of the two girls were found 17 months later in Bothell, Washington near Seattle.

In April 1997, friends saw Martinez forced into a vehicle in Beaumont, California. A forest ranger found his body, nude and bound, 16 days later in the woods about 70 east of Beaumont.

"The defendant has engaged in a continuing pattern of violence, attempted violence and threatened violence," the court papers said. "He is likely to commit criminal acts of violence in the future that would constitute a continuing and serious threat to the lives and safety of others."

Duncan pleaded guilty in state court to the murders of Brenda Groene; her fiance, Mark McKenzie, and her 13-year-old son Slade, all of whom he killed so that he could kidnap the younger children.

He faces federal charges of kidnapping Dylan, nine, and Shasta, who was eight at the time. Duncan held the children at a remote Montana campsite of weeks before he killed Dylan.

Background:
The Trial of Joseph Edward Duncan

Forum:
Discuss The Duncan Case

See Also:
Killer Faces Death in Grisly Idaho Case