Two weeks later, police found the body of 18-year-old Kylee Monteiro, who had been stabbed to death and buried in the yard of her boyfriend’s grandparents in Rehoboth, authorities said.
Gregory Groom, 22, admitted to police that he killed Monteiro, the Bristol County District Attorney’s Office said. Despite that alleged confession, he pleaded not guilty to murder.
Monteiro was last seen alive on Aug. 6. Investigators said she was with Groom at the time, and there was a physical altercation…