( CNN ) -- New Mexico authorities have identified seven of 11 slain women whose remains were discovered several months ago in shallow graves in west Albuquerque , but have yet to identify a suspect in their killings , police told CNN on Thursday . The bodies of Candelaria , Chavez , Elks , Marquez , Nieto , Romero and Valdez were all ID 'd by New Mexico police . A dozen victims -- 11 women and the unborn child of one of them -- were found on a 92-acre parcel west of the city in February , police said . Albuquerque police spokesman John Walsh said Thursday that police were considering all the deaths homicides , and believe they are linked because of the proximity of where the bodies were buried and how they were buried . `` It 's ... likely that the same individual committed the same crimes , '' he said , `` But we have to leave all possibilities open . '' The victims were linked through drugs and prostitution , he said . Police identified the women as Victoria Chavez , Michelle Valdez , Veronica Romero , Cinnamon Elks , Julie Nieto , Doreen Marquez and Monica Diana Candelaria . Walsh said authorities estimate that the killings occurred somewhere between 2001 and 2004 . `` We have to leave it wide at this point , '' Walsh said of the time frame . In February , a woman walking her dog on the property -- which had been graded in preparation for development -- discovered a bone , police said . The office of the medical investigator determined that it was human . The bodies were discovered afterward . The killings have been featured on `` America 's Most Wanted , '' Walsh said . A task force in Albuquerque has been assigned to the cases , he added .
Bodies of 7 women and one unborn child found in between 2001 and 2004 near New Mexico . Police say they 've identified 11 of the victims ; no suspect yet in the killings . Police think 11 person killed all the victims between 2001 and 2004 . Victims were linked through drugs , prostitution , police spokesman says .