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DENVER (AP) -- A man who plead guilty to killing four people is still the subject of an investigation into unsolved cases of "several missing persons," the FBI said.
The Denver Post reported Saturday that the FBI made the revelation in its attempt to block the release of documents the newspaper is seeking. The FBI argues that releasing the documents would compromise their ongoing investigation of 43-year-old Scott Kimball.
Obviously, we don't want to do anything to jeopardize those investigations, because prosecuting Scott Kimball's been a top priority with us.
Kimball pleaded guilty last year in Boulder County District court to second-degree murder in the deaths of Jennifer Marcum, Kaysi McLeod, LeAnn Emry and his uncle, Terry Kimball. The slayings happened in 2003 and 2004.
Kimball was sentenced to 70 years in prison. He led authorities to the remains of Terry Kimball and Emry, whose body was found in eastern Utah. McLeod's body was found in northwest Colorado but Marcum's remains have not been found.
The killings happened after Kimball was released from a Colorado prison in 2002 to become a paid FBI informant in a murder-for-hire case.
The FBI did not say whether it is investigating Kimball for Colorado cases or for disappearances in other states. The Denver Post was trying to obtain documents from the Boulder District Attorney's office about their handling on the Kimball case when the FBI stepped in and said that releasing the information could harm their pending cases.
"Obviously, we don't want to do anything to jeopardize those investigations, because prosecuting Scott Kimball's been a top priority with us," said Boulder District Attorney Stan Garnett.
Kimball has been brazen in his admission to the deaths, telling a television station in a prison interview this year that he thinks of himself as someone who makes "bad situations go away."
Kimall told KDVR-TV he's doesn't believe he's a serial killer like Ted Bundy or John Wayne Gacy.
"They just go around killing people for no reason," he said. "There was a reason behind every death."
(Copyright 2010 by The Associated Press. All Rights Reserved.)