MS-13 members used machete to kill Olney teen, left body in woods, police allege

Four MS-13 members took an 18-year-old Olney woman to a wooded area and killed her with a machete in an “unauthorized” gang murder in May, Montgomery County Police and prosecutors allege in charging documents.

The body of Rosa Sanchez Merino was not recovered until late last month when one of the suspects led authorities to the site, police say.

The four people charged with first-degree murder were identified as:
Roberto Carlos Rivera-Delgado, 23, of Gaithersburg
Iris Yudella Alonzo-Salgado, 23, of Frederick
Aracely Abarca-Melgar, 21, of Manchester, New Hampshire
A 16-year-old male (MoCo360 generally does not identify minors charged as adults)
During the first week of May, Rivera-Delgado drove the suspects to a wooded area in the 3600 block of Brookeville Road in Olney to murder Merino, charging documents alleged.

The killers led Sanchez Merino into the woods and placed her on her knees, then each of them took turns striking her in the neck with a machete, according to charging documents.

Afterward, they buried her in a shallow grave in the woods, charging documents alleged.