Feb 9 Killer

Juan Antonio Arreola-Murillo (born October 7, 1980), also known as the February 9 Killer, is a murderer responsible for the killing of two Salt Lake County, Utah women across the span of two years. In 2006, Arreola-Murillo murdered Sonia Mejia and her unborn baby. Two years later, he murdered Damiana Castillo. Both murders were committed on the same day, February 9, hence the nickname.

Investigation In 2009, the unsolved murders of Sonia Mejia in Taylorsville and Damiana Castillo in West Valley City were linked through DNA analysis. A 20-man task force was then formed to find the killer. In 2012, the case was classified as a cold case. In January 2022, the charging documents were unsealed and revealed the suspect to be 41-year-old Mexican national Juan Arreola-Murillo, who had previous convictions for fraud in 2008 and was later deported to his homeland, where he remained until his extradition. Arreola was quickly extradited after prosecutors said they would not seek a death sentence in the case.

In June 2023, Arreola pleaded guilty to three counts of aggravated murder. His sentencing occurred in August of the same year, where he was sentenced to 20 years in prison, to be served for the 3 cases one after the other, for a total of 60 years to life in prison.

Victims Sonia Mejia, aged 29, was raped and strangled in her apartment in Taylorsville. Her unborn child died with her. Damiana Castillo, aged 57, was strangled in her apartment in West Valley City.