REHOBOTH — Authorities have identified the man found dead on the morning of Friday, Sept. 26, 2025, in a van parked on the same Massachusetts property where an 18-year-old pregnant woman was murdered just weeks earlier.
According to a press release from the Bristol County District Attorney’s Office, David Lunn, 54, was discovered unresponsive inside a van at 107 County Street shortly before 7 a.m. last Friday by a relative. A 48-year-old woman, later identified as his wife, was also inside the van and was transported to the hospital in critical but stable condition, according to District Attorney Thomas Quinn III’s office.
Two dogs found in the van were released to Rehoboth Animal Control and were reported to be in good condition, the DA’s office said.
The van — which was registered in Vermont — was running when emergency personnel arrived. However, Rehoboth Fire Department officials found no signs of carbon monoxide poisoning, according to the district attorney’s office.
Officials said the couple may have had a history of substance abuse, but emphasized that the investigation into Lunn’s death remains open and is being handled by the Massachusetts Office of the Chief Medical Examiner.
The property where the van was parked is the same address where 18-year-old Kylee Monteiro was found dead and buried on August 19, after she was reported missing on August 7. Her boyfriend, Gregory Groom, was charged with her murder and has been held without bail since his August 20 arraignment, according to court records cited by MassLive.
Monteiro, who had been staying at a shelter in Pembroke, traveled to Gregory Groom’s residence at 107 County Street in Rehoboth on August 6 using a rideshare, according to prosecutors. She was 11 weeks pregnant at the time and had told Groom he was the father. Groom later told police he began saving money for a place for them to live—though he admitted he didn’t initially believe she was pregnant until she showed him medical documentation.
That evening, according to court records, Groom and Monteiro got into a physical altercation. Monteiro sent her sister a text message that read: “My phone’s at 4%, if I die it was Greg.” Police say she also told her sister, Faith Monteiro, that Groom had thrown her to the ground, pulled her hair, and strangled her.
Prosecutors allege Groom killed Monteiro the following day, on August 7, 2025. According to a police report filed in court by Detective Paul McGovern of the Rehoboth Police Department, Groom initially denied any involvement in her disappearance. But during an interview with police on August 19—after investigators informed him they had obtained a search warrant for the property—Groom confessed to stabbing Monteiro twice in the neck and once in the chest with a kitchen knife. The wound to her chest broke the blade.
Groom told police the fatal confrontation took place behind a shed on the property. After the killing, he said he spent several hours digging a grave in the woods, roughly 20 yards from the site of the stabbing, and buried her body at sunrise. He then drew a rudimentary map to help investigators locate the site, according to Assistant District Attorney Mohan, who spoke during Groom’s arraignment in Taunton District Court.
A police search on Aug. 19 uncovered a large pile of brush near the shed, where officers found blood and other physical evidence. About 20 yards away, they discovered a second pile of debris with “feet upon feet” of cut-down trees covering a rectangular grave filled with recently disturbed soil. Monteiro’s body was found buried roughly five feet below the surface.
Groom’s court-appointed defense attorney, Elliot Levine, did not contest the prosecution’s request that he be held without bail. Following the arraignment, neither Groom’s nor Monteiro’s families spoke to the media. One person leaving the courtroom with Monteiro’s family said only, “We’re devastated.”
The connection between David Lunn’s death and Monteiro’s killing remains unclear. To date, investigators have not disclosed any link beyond the shared location.
