US dual citizen extradited to El Salvador, accused of killing son's mother and abandoning toddler: DOJ

A dual U.S.-Salvadoran citizen from California accused of murdering a woman in front of their toddler son before abandoning the child near her remains has been extradited to El Salvador to face charges, the Department of Justice (DOJ) announced Thursday.

Michael Alejandro Castillo Murga, 27, of Beaumont, California, was handed over to Salvadoran authorities Wednesday to face charges of aggravated femicide and imperfect homicide in the 2019 killing.

The extradition marks the first time the U.S. has surrendered an American citizen to face prosecution for crimes committed in El Salvador, according to the DOJ. 

Castillo Murga holds dual U.S. and Salvadoran citizenship.

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Michael Alejandro Castillo Murga, 27, of California, was extradited to El Salvador to face charges in connection with the 2019 killing of his son's mother. (Department of Justice)

Salvadoran authorities allege Castillo Murga picked up Melvi Fernanda Nájera Quezada, 23, and their son from her mother's home Jan. 31, 2019, supposedly to begin living together as a family.

Investigators allege he instead killed Nájera Quezada and abandoned their child near her body, which was discovered near a highway the next day. 

An autopsy determined she died from severe bleeding caused by cuts to her neck and other wounds inflicted with a plastic knife, according to the DOJ.

The extradition marks the first time the U.S. has surrendered an American citizen to face prosecution for crimes committed in El Salvador. (Anna Moneymaker/Getty Images, File)

Investigators linked Castillo Murga to the killing through cellphone location data and witness accounts. Authorities also said he sent his girlfriend a photograph showing bloodstains on his face and neck.

Prosecutors also accused Castillo Murga's grandmother and a lawyer of helping conceal evidence. According to the DOJ, the pair arranged for two people to clean blood from the interior and exterior of Castillo Murga's vehicle using water, car shampoo and vinegar, but they were unable to remove all the blood.

Castillo Murga escaped to Guatemala around Feb. 2, 2019, with assistance from his grandmother and lawyer before eventually entering the U.S., according to prosecutors.

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The U.S. Marshals Service for the Central District of California provided assistance in this case and transported and transferred Murga to the custody of Salvadoran authorities. (Dominic Gwinn/Middle East Images/AFP via Getty Images, File)

U.S. Marshals arrested him in October 2024 in response to an extradition request from El Salvador.

Castillo Murga challenged his extradition in federal court, but a judge rejected his petition in November 2025 and denied a subsequent request to halt the transfer in September 2026.

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The secretary of state ultimately authorized his surrender, and U.S. Marshals transported him into Salvadoran custody Wednesday to face prosecution.

Brittany Miller is a Fox News Digital breaking news writer and former Independent reporter who graduated from Syracuse University in 2023.