Lisa Marie Naegle, 36, attended a friend's 40th birthday party in Alpine Village in Torrance late Saturday night.
Naegle's husband said he received a text message from her around 2:45 a.m., telling him she would be getting food and then coming home. But the registered nurse never returned home and did not show up to teach her nursing classes Sunday morning at West Los Angeles College in Culver City.
Tuesday afternoon, LAPD said information provided to them by that nursing student, 34-year-old Jackie Jerome Rogers, led investigators to believe that Naegle was murdered, and her body was at Rogers' Lennox residence.
A special operations team was called to Rogers' home to find remains. Coroner's officials were also called to the scene.
Rogers was detained and is expected to be booked on suspicion of murder and held on $2 million bail, LAPD Detective Megan Aguilar said.
Ever since Naegle vanished, her family members have been doing their own detective work, tracking down surveillance footage that they said shed some light into her disappearance.
Her family said surveillance footage shows Naegle leaving the party with Rogers. They say another video they obtained shows Naegle getting into Rogers' SUV and leaving the parking lot.
Before it was announced that the case was a homicide probe, Rogers was only called a person of interest. His home was seen surrounded by crime tape and law enforcement officials. Rogers' vehicle was impounded and searched, and investigators found evidence inside that vehicle that links Rogers to Naegle and possibly her murder.
Naegle's sister, Danielle Naegle-Kaimona, said Rogers repeatedly told the family that he did not leave the party with Naegle.
"We begged and pleaded that he'd come to our home to kind of give us details on what time, where were things, and when he left her, but while he was talking to us and telling us his story, multiple different times he said he absolutely did not go home with her, or did not take her home," Naegle-Kaimona said.
She added that a friend of hers at the party sent her multiple photos of her sister with Rogers, and that there is also footage of the pair going to a gas station.
Naegle-Kaimona and Naegle's husband, Derek Harryman, believe Rogers isn't telling the whole story, and he may know the truth behind what happened to Naegle.
Naegle-Kaimona said police later told her that Rogers said during questioning that he was having an affair with Naegle. He said that was the reason he kept switching up his story with her family. Naegle-Kaimona said her sister had told her that Rogers was gay.
However, police are not revealing details on the relationship between Naegle and Rogers, only saying the two knew each other.
According to Naegle-Kaimona, Rogers also told police that he dropped Naegle off at Vermont Avenue and Torrance Boulevard, which was the last time he saw her.
Naegle was a contestant on the E! network show "Bridalplasty" in 2010.