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Investigators in northern Mexico say they have arrested a man believed to be a serial killer linked to 15 slayings since 2009.
The Chihuahua state Prosecutor's Office says 35-year-old Andrés Ulises Castillo Villarreal was arrested in connection with the killing of two men who were beaten to death and dismembered in the same manner and left in the street in November and December.
A prosecutor statement issued Tuesday says the investigation led to a third victim whose body was found buried in one of the rooms of the house where Castillo lived.
He also is charged with sexually assaulting two other men.
Prosecutors say the crimes were related to sex and drugs, and authorities say the characteristics of the crimes could link Castillo to 12 other killings.
