A Florida couple is behind bars after they allegedly lured a teenage girl they met online to their home, tortured and suffocated her to death over a piece of missing jewelry, and dismembered her body before disposing of her remains in a dumpster.

Steven Gress, 35, and his girlfriend Michell Brandes, 37, stand accused of first-degree murder and kidnapping in the death of 16-year-old Miranda Corsette. The St. Petersburg Police Department said in a press release Friday that Gress picked up the girl on Feb. 14 after meeting her on a dating app and took her to his home in the 2700 block of 27th Ave. N. After hanging out that day, he drove her back to her home. Miranda returned to his home the next day, but this time she would not make it out alive.

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St. Petersburg police Chief Anthony Holloway told reporters at a press conference that there was a dispute over some missing jewelry on Feb. 20. Gress and Brandes allegedly assaulted and tortured Miranda for the next week.

“Repeatedly beat the victim, while holding her captive for seven days and eventually suffocating her by wrapping plastic wrap around her face,” a judge said during Gress’ first appearance, according to local NBC affiliate WFLA.

Gress and Brandes then put the teen’s body in his car and drove the remains some 15 miles to a home in the 12000 block of Mallory Drive in Largo. There, police believe she was dismembered. Her remains were once again moved, this time to a dumpster about 55 miles away across Tampa Bay. Cops have located the dumpster, however the remains were disposed into a Hillsborough County landfill. Cops are continuing to search for Miranda’s body.

Miranda’s grandmother, who had custody of her after both of her parents died, reported her missing to Gulfport police on Feb. 24. Gulfport police commander and acting chief Mary Farrand said her department is “very familiar” with Miranda, who is a “frequent runaway” with a history of mental health issues and drug abuse. She also was the mother of a 11-month-old child. Her grandma told police Miranda was known to run away and she’d usually return home, but not this time.

On Thursday, a “witness” contacted police regarding information about a kidnapping and homicide. Police realized they already had Gress in custody after he allegedly pointed a harpoon at Brandes and was in possession of drugs. Detectives quickly unfurled the horrific case. Brandes turned herself into cops on Saturday.