Investigators have found three more bodies and a fetus in a vacant New Mexico property where six bodies were unearthed earlier this month.

Two bodies were discovered on Saturday while the remains of a pregnant woman was discovered on Monday, Albuquerque police spokesman John Walsh said. The bones have been sent to the New Mexico Office of the Medical Investigator for analysis.

Police, deputies from the Bernalillo County Sheriff's Office, FBI agents, anthropologists, archaeologists and students or professors from the University of New Mexico have been digging up in the 92-acre land west of Albuquerque since a woman walking her dog discovered the graves two-and-a-half weeks ago, said Nadine Hamby of the Albuquerque Police Department.

Of the earlier remains found, only one was identified, a prostitute and drug user named Victoria Chavez, who has been missing since 2003. Investigators do not know yet how the victims died and how their bodies ended up in the vacant land being prepared for development.