A 24-year-old Frederick woman has been convicted in the 2023 murder of an 18-year-old Gaithersburg woman that authorities say was ordered by the MS-13 gang, Montgomery County prosecutors announced.

Iris Alonzo-Salgado was found guilty of first-degree murder, conspiracy to commit first-degree murder and participating in a criminal organization resulting in death after a bench trial before Judge Theresa Chernosky in the Circuit Court for Montgomery County.

Alonzo-Salgado waived her right to a jury trial.

Alonzo-Salgado faces the possibility of two life sentences plus 25 additional years in prison. Sentencing is scheduled for Jan. 21, 2026.

Authorities said Alonzo-Salgado and three others were involved in the killing of Rosa Sanchez Merino, whose remains were found in September 2023 in a

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