Kylee Marie Monteiro, an 18-year-old pregnant woman, was last seen on August 7, 2025, at the home of her boyfriend Gregory Groom in Rehoboth, Massachusetts. Groom reported her missing on August 8. After investigation and interviews, Groom admitted to stabbing Monteiro multiple times during an altercation and burying her body on his property. Charges include murder, assault and battery on a pregnant victim, and witness intimidation. The fetus was also killed. Groom pleaded not guilty and was held without bail. The case remains pending with a probable cause hearing scheduled.
Country: United States
State/Province: Massachusetts, United States
City/Region: Rehoboth
Incident Type: Murder
Relationship Status: Dating
Relationship Duration: Approximately 6 months
Incident Date: Aug. 7, 2025
Relationship Origins:
Relationship Stages:
Contributing Factors:
Red Flags:
Motives:
Relationship Outcomes:
How the relationship or connection began.
Approximately 6 months
Important relationship phases recorded for this case.
Reported red flags or early concern points.
Contributing factors and possible motives from the available sources.
2025-08-07
Recorded relationship or case outcome.
English labels are shown first. Original-language titles are preserved for source verification.
Original language: English
New details emerge as Rehoboth man charged with killing pregnant girlfriend appears in court
Domestic Violence
The relationship between Kylee Monteiro and Gregory Groom was marked by domestic violence, escalating conflicts, and jealousy. Groom admitted to physical abuse and ultimately to killing Monteiro during an argument. The pregnancy added complexity, with Groom denying paternity initially and the fetus also dying. Witness intimidation and attempts to conceal the crime were part of the pattern.
Police investigation included interviews, forensic searches with cadaver dogs and excavators, and evidence collection of blood and physical traces. Groom initially reported Monteiro missing but later confessed to stabbing her and burying her remains on his property. Charges include murder, assault on a pregnant victim, and witness intimidation. Groom was held without bail. Autopsy confirmation awaited at time of report. Probable cause hearing scheduled.
Initial conflicting accounts from Groom about Monteiro's disappearance and pregnancy status. Uncertainty existed until Groom's confession. No reported confusion about suspect identity after confession.
Kylee Monteiro was last seen at Groom's home on August 7, 2025. Groom reported her missing on August 8, claiming she left after an argument. Text messages from Monteiro to her sister on August 6 revealed prior abuse and fear of Groom. Police interviewed Groom multiple times; he admitted to physical abuse and ultimately to stabbing Monteiro during an argument behind a shed on his property. Groom drew a map to the burial site. Police recovered remains consistent with Monteiro's on August 19. Groom was arrested and charged.
High risk due to documented domestic violence, escalating physical abuse, threats, and eventual lethal violence. The presence of pregnancy and attempts to control communication increased vulnerability.
Early signs of domestic violence and abuse, including text messages indicating fear and prior assault, were critical. The escalation from abuse to lethal violence underscores the importance of early intervention. Groom's own admissions provided key evidence. The case highlights risks for pregnant victims in abusive relationships and the role of social media and family communication in raising alerts.
Kylee's text to her sister stating 'if I die, it was Greg' and reports of physical abuse were the most significant early signals.
Text messages, social media inactivity, Groom's inconsistent statements, and physical evidence on property helped connect the case.
Physical evidence including blood and remains found on Groom's property, forensic mapping by Groom, and digital communications were strongest.
Kylee's sister reported receiving texts about abuse and fear. Family members expressed devastation but no direct eyewitness accounts reported.
Follow-up reports confirmed Groom's confession and recovery of remains. No contradictory suspect information emerged.
Autopsy confirmation awaited at time of report. Details about motive nuances and full timeline of abuse remain incomplete.