At least nine. Mike King of the Utah attorney general's office. The majority of the women were killed within the last 10 years, however one case dates to 1983.
Investigators believe there are at least two killers responsible.
Some investigators involved believed that the same person was responsible for killing three of the victims between 1990 and 1993. These slayings occurred in Millard and Juab counties in Utah, and in Elko, Nev. There was also a killing in St. George, Utah, in 1991 that was thought to also be linked to this sub-cluster. However, in March 1999 police arrested the husband of the Juab County victim and charged him with her murder. It's unknown how this links to the other cases, according to authorities.