By David Spunt

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PHILADELPHIA (CBS) — Police are looking for a missing 29-year-old Upper Darby woman they say was last seen in Philadelphia on Thursday.

Investigators say Hope Meussner was last seen at her Center City bakery job at 17th and Market Streets.

They say she worked her last shift Thursday and hasn’t been seen since.

(credit: CBS3)

She left her cellphone behind in the bakery’s bathroom and left before clocking out.

Her father, Christopher Meussner, says this is totally out of character.

“She’s never left like this before in her life. She’s never been gone for an overnight period, let alone several days in a row. The fact that she left her phone at work is highly suspicious and concerning,” he said.

He has a message for his 29-year-old daughter if she’s listening: “Hope we love you. Just come home. We just want to see you and know that you’re safe. Just come home as soon as you can.”

“This is different than pretty much anyone I’ve ever worked,” said Kevin Ryan, a private investigator hired by Meussner’s dad. The Upper Darby Police Department is also working the case because that’s where the 29-year-old lived with her mother.

“There’s no history of addiction. No history of mental illness. Nothing really going on in her life in the days leading up to her disappearance that would cause her to drop off the grid for a few days to collect her thoughts,” said Ryan.

Authorities say she also doesn’t have a car and uses public transportation.

Officials say if you see her, call 911.