(AP) — Utah prosecutors have used a DNA profile to file charges against a mystery man who police say strangled two women on the same date two years apart.

Police don't know the suspect's name, so court papers filed Monday identify him as "John Doe." Tuesday was the anniversary of both women's deaths.

Sonia Mejia was killed Feb. 9, 2006, in Taylorsville. Daminia Castillo was killed Feb. 9, 2008, in West Valley City. Both towns are in Salt Lake County.

Prosecutors used evidence collected at both crimes scenes to build the DNA profile.

If ever prosecuted, "Doe" faces two counts of aggravated murder, two counts of aggravated robbery, one count of aggravated burglary and one count of aggravated sexual assault.

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Information from: The Salt Lake Tribune, http://www.sltrib.com

NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore. Credit: Randee Daddona, Michael A. Rupolo Sr.

Out East Show: Visit The Shamrock evergreen maze, Sannino Vineyard, Seven Ponds Orchard and the Warrior Ranch Foundation NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore.

NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore. Credit: Randee Daddona, Michael A. Rupolo Sr.

Out East Show: Visit The Shamrock evergreen maze, Sannino Vineyard, Seven Ponds Orchard and the Warrior Ranch Foundation NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore.

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