Investigators in Ohio are searching Wednesday for a missing 23-year-old woman whose backpack was found abandoned after she left home to go on a walk and never returned, police said.

Alicia Kenny, of Loveland, is listed as a “critical missing person” after disappearing late Saturday. Her whereabouts remained unclear midday Wednesday, police officials confirmed to The Post.

Kenny’s mother said her daughter lives with her grandparents and left their home to go for a walk, as she frequently did to write or draw in local parks.

“It’s just really hard to think about what could happen,” Marcy Kenny told WLWT. “She’s just gone.”

A delivery driver found Kenny’s backpack at a subdivision in Loveland before she was reported missing. Police in Montgomery later dropped it off at Kenny’s home after the driver took it to cops, WLWT reported.

“And that’s when everybody realized that she wasn’t there, that when she left on Saturday night, she had never come home,” Marcy Kenny said. “In the backpack were her phone, her ID, her wallet, everything.”

Kenny said her “very religious” daughter never went anywhere without her backpack, which also contained her Bible.

“That’s something that’s extremely close to her heart,” the distraught mom told the station.

The Ohio Bureau of Criminal Investigation has joined the search for Kenny, WCPO reported.

Detectives were working several tips in the investigation to track down Kenny, who is known to frequent parks and has no known vehicle, police said.

Kenny, who is roughly 5 feet tall and weighs 110 pounds, was last seen wearing dark pants, a white shirt and sandals, police said.

“All she has is literally the clothes on her back,” Marcy Kenny said. “Without that backpack, she has absolutely nothing. And I honestly … we can’t think of any scenario where she would have put the backpack down and walked away willingly.”

Cops were headed to Marcy Kenny’s home Wednesday to give her an update in the search, she told The Post, while confirming her daughter remained missing.

Investigators had previously obtained an item with Alicia’s DNA on it, her mother told WCPO.

“In case she’s found, they want to be prepared,” Marcy Kenny said. “And just the thought of that takes us to a very deep and dark place that we try hard to avoid. The storms that hit [Tuesday] night, if she was out there alone … that’s a very painful thought.”

Kenny’s friends, meanwhile, asked for help on Facebook in the ongoing search to find her.

“She called people asking for a ride, and to our knowledge was never picked up by one of her friends,” one post read. “Her belongings were found in her backpack which was abandoned and picked up by a UPS driver on their route … If you see her, please call 911 immediately.”