The mother of a 16-year-old whose body was found in Roosevelt says she believes the MS-13 gang is responsible for his death.

Nassau County police say the body of 16-year-old Angel Soler was found last week, buried in a wooded area off the Southern State Parkway in Roosevelt. Authorities began to search the 27-acre site Thursday after receiving detailed information from a person of interest. Local, state and federal officials conducted an extensive, four-day grid search of the area for possible human remains.

Claudia Erazo says she's been unable to sleep since learning that Soler, who was her brother's friend, was found dead. She says that's because her younger brother, 17-year old Joshua Aguilar, and another friend, 19-year-old Kerin Pineda, are missing.

All three boys are from Honduras and attended school in Freeport together for some time. Soler vanished this past July, and Pineda went missing in May 2016 after his mother says he got into a fight with some MS-13 members. Aguilar disappeared in September 2016.

Erazo says she last saw her brother around 9:30 p.m. the day he went missing. He received a phone call and went to meet the caller at Western Beef in Roosevelt.

Soler's mother came to the store where Erazo works and put out a canister to raise money to bury her son in Honduras. She told News 12 over the phone that while she fears MS-13 may be responsible for her son's death, she's hoping police will get to the bottom of it.

Nassau police say they are "looking into all avenues" to determine a motive behind Soler's death. As for the other missing persons cases, police say "all cases are provided with exceptional investigative resources to determine the nature and motive of the missing person."