Gregory Groom, the boyfriend of Kylee Monteiro, a missing 18-year-old pregnant woman, will be charged with murder after police found a body in Rehoboth, Massachusetts, according to investigators.Police arrested Groom Tuesday in connection with Monteiro's disappearance.

Gregory Groom, 22, is accused of killing 18-year-old Kylee Monteiro, who was 12 weeks pregnant and was last seen earlier this month.

Gregory Groom, of Rehoboth, confessed to police that he stabbed Kylee Monteiro multiple times with a kitchen knife, according to prosecutors.

Gregory Groom will be charged with murder Wednesday in the death​ of his pregnant 18-year-old girlfriend Kylee Monteiro in Rehoboth, Massachusetts.

Massachusetts police converged in an area where 18-year-old Kylee Monteiro was last seen, almost two weeks after she was reported missing.

Human remains consistent with missing pregnant teenager Kylee Monteiro have been found, and her boyfriend Gregory Groom is expected to be charged with murder.

A search is underway in Rehoboth, Massachusetts for a missing pregnant teenager. Kylee Monteiro, 18, has not been seen in almost a week and the fear is growing with each passing day. "She's timid and scared and doesn't know how to be on her own," said her sister Faith Monteiro.

The boyfriend of 18-year-old Kylee Monteiro is accused of fatally stabbing her in Rehoboth, Massachusetts, officials said. Screengrab via Faith Monteiro on Facebook A Massachusetts man told police his pregnant 18-year-old girlfriend was missing in early ...