Aug 23, 2025, 4:51 PM ET

Man charged with murder of ex-girlfriend, who was 11 weeks pregnant

A Massachusetts man has been charged with murder after the body of a person believed to be his pregnant ex-girlfriend was found buried in his backyard. Police say he has confessed to killing her.

Key Takeaways:

Gregory Groom has been charged with the murder of his ex-girlfriend, Kylee Monteiro, who was 11 weeks pregnant.
A body believed to be Monteiro’s was found buried on Groom’s property.
Homicide remains a leading cause of death of pregnant women.

The Details:

Gregory Groom, 22, of Rehoboth, Massachusetts, has reportedly admitted to killing his 18-year-old girlfriend, Kylee Monteiro, who was 11 weeks pregnant. Authorities say Groom stabbed Monteiro in the neck and chest with a kitchen knife, and then buried her body on his 25-acre property.

Monteiro was last seen on August 7. One day earlier, she had been texting with her sister, Faith Monteiro, and disclosed that she and Groom had gotten into an argument.

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“He threw me on the ground and pulled my hair and strangled me. My phone is at 4% and if I die, it was Greg,” Monteiro’s text read. Faith Montiero told police that Kylee had been living in a homeless shelter for pregnant women because her relationship with Groom was “on and off,” and they had been having “domestic issues.”

Groom himself called police on August 8 to report Monteiro missing, explaining that she had been “at his house, she was looking for a place to stay, they got into an argument and that she ultimately left his residence.” He also told authorities that she told him she was 11 weeks pregnant, and that he was the father of her preborn child.

Though Groom initially denied any knowledge of Monteiro’s whereabouts, authorities threatened to get a warrant to search the property with a cadaver dog. Groom then confessed to stabbing her and burying her body, drawing a map which led authorities to the spot where a body, believed to be Monteiro’s, was discovered.

Groom was arraigned Wednesday in Taunton District Court, where his attorney entered a not-guilty plea. He faces charges of murder, assault and battery on a pregnant victim, aggravated intimidation of a witness, juror, police or court official, and assault and battery on a family or household member.

Bristol Count District Attorney Thomas M. Quinn told reporters that it is “still too early” to determine a motive for the killing, but the investigation is ongoing.

Why It Matters:

Homicide remains a leading cause of death for pregnant women, and many of these homicide deaths are domestic violence situations. According to research published by the Society for Maternal-Fetal Medicine in January 2025, between 2005 and 2022, of 20,421 maternal deaths, 1,407 were due to homicide.

If you suspect you or someone you know is involved in a possible domestic abuse situation, please visit thehotline.org or call 1-800-799-SAFE.

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