Missing California Woman Found Dead After Disappearance with Ex-Boyfriend: Investigation Ongoing

An 18-year-old California woman, Marissa DiNapoli, was found dead after disappearing with her ex-boyfriend. Police are investigating the case as a potential crime, with authorities seeking justice.

In a heartbreaking development, 18-year-old Marissa DiNapoli, a young woman from California, was found dead earlier this week, after being reported missing for several days. Marissa, who was last seen with her ex-boyfriend, has been confirmed dead by the Santa Clara County Coroner. Authorities have named her ex, Martin Mendoza, as a person of interest in the investigation.

Marissa DiNapoli poses beside a cake with "2025" candles during a celebration, posted on July 1, 2025 | Source: Instagram/moniice__
Marissa DiNapoli poses beside a cake with “2025” candles during a celebration, posted on July 1, 2025 | Source: Instagram/moniice__

The Disappearance and Search
Marissa DiNapoli was last in contact with her family on June 28, when she mentioned that she was staying with a friend. However, when she failed to return the next day and didn’t respond to messages, her family grew concerned and reported her missing on June 30.

Community members and law enforcement search near Anderson Lake during the investigation into Marissa DiNapoli's disappearance, from a video posted July 3, 2025 | Source: YouTube/NBCBayArea
Community members and law enforcement search near Anderson Lake during the investigation into Marissa DiNapoli’s disappearance, from a video posted July 3, 2025 | Source: YouTube/NBCBayArea

The search efforts gained momentum as the family, along with volunteers, began scouring nearby areas. On July 2, Marissa’s body was tragically discovered in a remote location near Morgan Hill, California. The discovery was made by a family member using a drone, at the Woodchoppers Flat Picnic Area, located at Anderson Lake.

Marissa DiNapoli sits outside in a garden area, smiling in a black dress near a sign that reads "Karlene's Garden," posted on July 1, 2025 | Source: Instagram/moniice__
Marissa DiNapoli sits outside in a garden area, smiling in a black dress near a sign that reads “Karlene’s Garden,” posted on July 1, 2025 | Source: Instagram/moniice__

Marissa’s ex-boyfriend, 21-year-old Martin Mendoza, was last seen with her on the morning of June 29, when the two were spotted leaving a residence on Trail Drive in Morgan Hill. Surveillance footage shared by Marissa’s sister shows the pair walking together, but it raises questions about their relationship’s nature and events leading up to her disappearance.

Marissa DiNapoli reads from a card during a quiet moment in the kitchen, as a family member looks on, in a video posted on July 1, 2025 | Source: Instagram/moniice__
Marissa DiNapoli reads from a card during a quiet moment in the kitchen, as a family member looks on, in a video posted on July 1, 2025 | Source: Instagram/moniice__

Alarming Details and Growing Concerns
Marissa’s friends and family had voiced concerns about Mendoza’s behavior in the days leading up to her disappearance. Marissa’s close friend, Jaslyn Gutierrez, revealed that Marissa had previously expressed fear of Mendoza, warning that he had become obsessed with her. Jaslyn recalled Marissa saying, “he would kill her” if she didn’t break off contact.

Jaslyn Gutierrez speaks to NBC Bay Area near the lake where Marissa DiNapoli's body was found, from a video posted July 3, 2025 | Source: YouTube/NBCBayArea
Jaslyn Gutierrez speaks to NBC Bay Area near the lake where Marissa DiNapoli’s body was found, from a video posted July 3, 2025 | Source: YouTube/NBCBayArea

Additionally, Marissa’s teacher, Tara Guerrero, described the young woman as a caring and generous person who had a bright future. Guerrero, who had taught Marissa at Opportunity Youth Academy, fondly remembered her as a student with a smile that could light up any room.

A view of Anderson Lake, where Marissa DiNapoli's body was discovered during a drone search, from a video posted July 2, 2025 | Source: YouTube/abc7news
A view of Anderson Lake, where Marissa DiNapoli’s body was discovered during a drone search, from a video posted July 2, 2025 | Source: YouTube/abc7news

The Role of Martin Mendoza
Despite mounting evidence that places Mendoza with Marissa at the time of her disappearance, he has refused to cooperate with investigators. Authorities have since named him as a person of interest in the ongoing investigation. Mendoza is believed to be driving a white Toyota Camry, with California license plates CW87W00 or 9PTM351.

Joyce Gomez's co-worker, Chris Langer, shared his thoughts on her disappearance, as seen in a video dated April 29, 2025 | Source: YouTube/wloxnewsnow
Joyce Gomez’s co-worker, Chris Langer, shared his thoughts on her disappearance, as seen in a video dated April 29, 2025 | Source: YouTube/wloxnewsnow

Police have urged anyone with information about the case to come forward and help them uncover the truth behind Marissa’s tragic end.

A Community in Shock and Grief
Marissa’s family has publicly expressed their devastation and sadness. “We are deeply saddened by the loss of our beloved Marissa. We kindly ask for privacy as we navigate this difficult journey,” a family spokesperson said in a statement.

Joyce Gomez's co-worker, Chris Langer, is seen sharing his thoughts in a video interview, dated April 29, 2025 | Source: YouTube/wloxnewsnow
Joyce Gomez’s co-worker, Chris Langer, is seen sharing his thoughts in a video interview, dated April 29, 2025 | Source: YouTube/wloxnewsnow

In honor of her memory, the family has requested that donations or fundraising pages not be created. Instead, they’ve asked for prayers, messages of support, and shared memories as a way to remember Marissa.

As the investigation into Marissa’s death continues, it serves as a grim reminder of how quickly lives can be turned upside down. The case also highlights the importance of raising awareness about unhealthy relationships and the dangers of obsession.

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