The manhunt for one of the nation's most wanted fugitives is over after a Texas dog found the skull of convicted child sex offender Kevin Stoeser.

Elizabeth Saab of Fox affiliate KTBC reported that Stoeser had been on the run since October 2013, when he fled a transitional facility near the end of his 11-year prison sentence for child sex assault and child pornography.

Hector Gomez of the Lone Star Fugitive Task Force revealed that Stoeser had been confronted with a device linked to him that had images of scantily-clad children, leading to him going on the run and landing him on the U.S. Marshals' 15 Most Wanted list.

In early September, 13-year-old yellow Labrador Retriever Carly wandered out of her backyard and returned home the next day with a human skull, which she found in an area near where Stoeser fled and where U.S. Marshals had been searching for months.

Carly's owner, Bonnie Vinklarek, explained that Carly is always returning with objects such as ducks, chickens and kids' toys.

"This is just the weirdest thing she's ever brought home," Vinklarek said.

After extensive DNA testing, authorities confirmed it was Stoeser's skull.

Investigators are not sure how he died, but they think it may have been during October 2013 flooding in the area.

No word yet if Vinklarek and her husband will receive the $25,000 reward that was offered for the fugitive.

Watch more above.