The private investigator told INSIDE EDITION that the man's boots matched marks left inside the Ramseys' home.
More than 20 years after the killing of six-year-old JonBenet Ramsey, a private investigator once hired by her family says a man who lived nearby may have played a part in her death.
Ollie Gray, who now suffers from Parkinson's disease, continues probing the child's murder on his own time.
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A 26-year-old man who lived nearby may have had something to do with the grisly slaying, he says.
"I think that there's something there," Gray told INSIDE EDITION.
Michael Helgoth lived a few miles from the Ramsey home in Boulder, Colorado, and shot himself to death less than two months after the girl's death.
Helgoth's death may not have been a suicide, he says. "I think it's worth following up on," he said.
Gray said he obtained a pair of boots once worn by Helgoth, its footprint is similar to one found in the Ramsey basement, where JonBenet's body was found.
A Helgoth family member said relatives do not believe he killed JonBenet.
The Boulder Police Department said the case is being investigated.
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