Significant assistance has also been provided by the National Center for Missing and Exploited Children. Forensic testing revealed they likely belonged to children between the ages of 2 and 4, 5 and 8, and 6 and 10.
The Missoulian reports that Missoula police launched an investigation after a cleaning crew found the box when the former tenant was evicted from the property.
"[We found] loose teeth, there was what appeared to be bone from a lower jaw, and others that were not as specifically described, but I would call them pieces of bone", Missoula, Montana police Sgt. Travis Welsh said.
Missoula Police tell MTN News they will be conducting interviews with people of interest in the next few days surrounding the case of bones found in a Missoula shed.
Tanner, Alexander and Andrew Skelton were 5, 7 and 9 when they were last seen at their father's Morenci, Michigan, home in November 2010.
Missoula police confirm that MI state police contacted them Thursday morning inquiring about the case of children's remains found.
Michigan State Police did not respond to requests for comment Thursday night.
Michigan State Police have confirmed that they're investigating whether the remains could belong to the Skelton brothers.
Kathye Herrera, a friend of Tanya Zuvers, said that even if the remains proved to be those of the missing children, it would be better for her friend to know that than to go on not knowing.
"There has been nothing previously reported to police linking the brothers to Montana, and it is not known at this time if the remains are from related siblings", the release said. Police believe he killed them. John Skelton had the boys on Thanksgiving day in 2010 and was suppose to return them back to their mother, Tanya Zuvers the following day, but never did. Since their bodies could not be found, John Skelton was charged with and convicted of three counts of kidnaping.
"Answers. We've been praying for answers", she said.
"We don't know where the bones came from, and if they were transported from one area to another, and ended up here". He pleaded guilty to unlawful imprisonment in exchange for the kidnapping charge being dropped, and was sentenced to 10-15 years in prison.
Members of the University of Montana Anthropology Department studied the remains and determined they were bones from children.