Police are desperately searching for a 5-year-old girl who vanished overnight this weekend, as they question the girl’s uncle about her disappearance.

The Salt Lake Tribune reports that the family of Elizabeth Shelley discovered she was missing from their home in Logan, Utah, on Saturday morning. The family reportedly told police they had last seen the girl at about 2 a.m. Saturday morning, but when they woke up she was gone — along with her 21-year-old uncle.

According to the report, police are now questioning the uncle after finding him walking around the town at about 3 p.m. Saturday afternoon. The Cache County Sheriff’s Office told the newspaper they detained the man and have been questioning him about the girl, but that he has been uncooperative.

Authorities are seeking surveillance footage from Logan residents and business owners, focusing on the area between 300 South and 100 North and 300 West to 600 West, according to the report.

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Logan police Captain Tyson Budge told the newspaper that authorities are “very concerned” about the little girl’s safety.

“At this point, we believe she’s been harmed,” he said.

Elizabeth Shelley is described in the report as 3 feet, 6 inches tall, with brown eyes and shoulder-length brown curly hair. There was no description provided about what the girl was last seen wearing.

Anyone with possible information about Elizabeth’s disappearance is urged to call the Cache County Sheriff’s Office at 435-753-7555.

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[Feature image: Elizabeth Shelley/Logan Police Department]