According to Zappa, when she arrived for an MRI on Monday evening, she was told to secure her clothes, jewelry and purse in a locker. Zappa said she took the key into the MRI room with her.

When the test was over, the rings were gone.

“The whole container was gone with all of my jewelry,” she said. “If someone tells me I’m in a hospital, it's secure, it's safe here, you have the only key, I’m going to assume that's the truth.”

Courtesy of Lauren Zappa

But Zappa said, as they waited for security, an employee tested the lock on her locker.

“[The] employee was like 'I’m just going to see if this other key unlocks your locker door too' and it did,” said Zappa. “She tried to unlock the locker it came from, and then my locker, and they both unlocked.”

Zappa filed a report with security and St. Paul Police.

She said she heard back from the hospital on Wednesday.

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“They said they're not responsible for it, it's just a broken lock, a crime of opportunity and that they were sorry that it happened,” said Zappa.

A spokesperson for Allina Health declined our interview request, saying St. Paul police are investigating and any questions need to be directed to them.

St. Paul police confirmed the investigation is ongoing.

“It’s a locked room so you have to badge in, so the amount of people that could be in and out, it's a pretty small group of people,” said Zappa.

She’s celebrating her two-year marriage anniversary in September. It's not the only reason the rings are sentimental.

The set includes sapphires from her grandmother. The center diamond is from her great-grandmother, and the thin gold band was her great grandmother’s wedding ring.

“She gave it to me on my 10th birthday so it's engraved with their initials, their wedding date in 1942,” said Zappa. “I was lucky enough to know my great-grandma, really lucky to have my grandma be an active part of my life, and having them both gone now it was really, really sentimental to me.”

St. Paul police said they are monitoring pawn shops to see if it turns up.

Zappa hopes whoever has her rings will return them, even if it’s done anonymously.

She also wants Allina Health to check all of the locks hospital-wide to make sure they’re all working.

“I feel someone needs to be held responsible for it and mostly so it doesn’t happen to someone else," said Zappa.

Police told KSTP "the hospital is very safe" but they remind people to leave valuables at home.