MASSAPEQUA, N.Y. (CBSNewYork) – A fourth man is facing charges in the death of an 18-year-old whose body was found in a shallow grave earlier this year on Long Island.

Investigators believe MS-13 gang members killed Brian Lemus, of Uniondale, three years ago. His remains were discovered on May 24 at Massapequa Preserve.

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Christian Rodriguez, 22, of Hempstead, was arrested in the case Tuesday.

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Three other men – Stanley Gerson Juarez, Raul Ponce and Samuel Ponce – were charged with second-degree murder back in June.

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Lemus’s remains were found about 100 feet away from where another body was discovered in 2017.