"[Kimball] was around the area at that time," Dachelle Powell, the sister-in-law of murder victim Catrina Powell, said investigators told her.
She also said an FBI agent and a local detective have indicated they are investigating whether Kimball killed Powell.
"I think just because of the similarities of the females that he preyed on makes them investigate," Dachelle Powell told 9Wants to Know.
Catrina Powell died Oct. 24, 2004 and the coroner ruled her death a homicide.
The murderer cut off her hands, the coroner's report says.
She, like some of the other victims tied to Kimball, battled a drug habit, Dachelle Powell said.
Dachelle Powell said she met with an FBI agent in mid-2009.
Multiple sources caution that no charges have been brought and point out that bringing charges, if any, against Kimball is a long way out.
Dachelle Powell said she did not believe Catrina Powell associated with Kimball.
"I never knew her to know him," Dachelle Powell said.
Westminster Police tell 9Wants to Know the nearly 6-year-old murder is still an active investigation.
The FBI has declined to speak publically about the case, but 9Wants to Know has previously confirmed that state and federal authorities believe Kimball may be tied to unsolved murders in the area.
He has already been convicted in the killings of four other people since his 2002 release from federal prison.
Kaysi McLeod's remains were recovered in a remote area of Jackson County in June 2008.
The remains of a second girl Kimball murdered, LeAnn Emry, were found in the Book Cliffs of southeastern Utah on March 11, 2009.
Remains thought to be those of Terry Kimball, Scott Kimball's uncle, were found near Vail Pass in June 2009.
The remains of a suspected fourth victim, Jennifer Marcum, have not been found.
Have more information about this story, e-mail investigative reporter Jace Larson at email@example.com or call 303-871-1432. Follow him on www.twitter.com/jacelarson.
For more on this story, visit the Denver Post.
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