Indiana State Police's analysis of Allen's gun "determined the unspent round located within two feet" of one of the victims "had been cycled through Richard M. Allen's Sig Sauer Model P226," the probable cause affidavit said.
"When asked about the unspent bullet, [Allen] did not have an explanation of why the bullet was found between" the girls' bodies, the probable cause affidavit said.
When Allen voluntarily spoke to police on Oct. 26, 2022, he said he never allowed anyone to borrow that gun, which he said he owned since 2001, the document added.
Garrett said he doesn't understand why it took police so many years to match an unspent round from the crime scene to a gun owned by a man who lives in Delphi.
Garrett said he hopes investigators went to all of the local gun stores to see their records of sales of .40-caliber-type weapons. Garrett said he's solved homicide cases that way, because typically a perpetrator buys a gun legally near his or her home, he said.
While it's unclear if police did go to gun stores, Garrett think it's unlikely because there was no mention of a gun in the case until the probable cause document was released Tuesday.
...
Documents related to the arrest of Richard Allen in the killings of two girls determined that an unspent bullet from the crime scene was cycled through Allen’s gun.
abcnews.go.com
December 1, 2022, 5:08 AM