LOGAN, Utah (KSTU) -- Logan Police provided new details on the search for Elizabeth Shelley, now in its fourth day.
Police said Elizabeth was last seen at a home in western Logan at 2 a.m. Saturday, and she was reported missing eight hours later.
Elizabeth's uncle, 21-year-old Alex Whipple, arrived at the home Friday evening. He and Elizabeth were both gone by 9 a.m. Saturday.
"We have strong evidence connecting Alex to Lizzy's disappearance," Logan City Police Chief Gary Jensen said in a news conference Tuesday morning.
Jensen didn't specify the nature of the evidence, but said it was "DNA-positive materials."
Police do not have evidence of any sex crimes, according to Jensen.
Cache County deputies located Whipple around 3 p.m. Saturday and took him into custody for a probation violation and possession of drug paraphernalia. Whipple has been uncooperative in the investigation of Elizabeth's disappearance, according to Jensen.
Earlier Tuesday, Logan City Police released a pair of photos of Whipple that were captured on surveillance cameras Friday.