A Massachusetts man allegedly stabbed his girlfriend to death at his home before burying her in a 5-foot grave and calling cops to report her missing, claiming she stormed off following an argument.

Gregory Groom, 22, stands accused of murder , assault and battery on a pregnant person and witness intimidation in the death of 18-year-old Kylee Monteiro in Rehoboth, which is some 50 miles southwest of Boston. Groom was arraigned on the murder charge on Wednesday morning after investigators recovered Monteiro's body on Tuesday night.

According to prosecutors, Groom called Rehoboth cops on Aug. 8 and told them Monteiro had been at his home two days prior, looking for a place to stay. He claimed they got into a verbal spat and she left his home, and she hadn't been heard from since, District

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