Two Hyattsville teens were arrested in the gang-related stabbing of a 19-year-old found dead in the woods, police said.

Brothers Lenin Mancias-Callejas and Bryan Mancias-Callejas, both 16, have been charged as adults with first-degree murder in the death of Herson Mejia-Alvarez, 19, of Riverdale, Prince George’s County police said Wednesday. Police said they are still looking for a third suspect, 18-year-old Francisco Sosa, in connection with the killing.

Officers found Mejia-Alvarez’s body in a wooded area shortly before 1 p.m. May 23 in the 8900 block of New Hampshire Avenue in Silver Spring, police said.

Mejia-Alvarez was killed four days before his body was found in the woods, with cell phone records showing he and the Mancias-Callejas brothers were at an apartment building together before they travelled to an isolated location where Mejia-Alvarez’s body was eventually found, according to charging documents.

The Mancias-Callejas brothers and Sosa are members of MS-13, charging documents state.

The brothers are being held in the county jail without bond. An attorney for the brothers could not be immediately reached for comment.