Allegedly among them, Miguel "Timido" Angel Lopez-Abrego, who authorities recently arrested in North Carolina on November 11.
Detectives learned about the killing in early September from an informant, charging documents state, and about a specific site to search in Wheaton (Maryland) Regional Park, where they found the grave and remains.
The victim is yet to be identified but was described as a 5ft 2in Hispanic man.
In a horrific incident, notorious USA street gang that President Donald Trump vowed to wipe out beheaded a man and cut out his heart, a report said.
The Trump administration has vowed to eliminate MS-13, which has gripped communities in places like Montgomery County with its brutal crimes.
FOX 5 has learned Lopez-Abrego was a student at Northwood High School in Silver Spring, but withdrew from the school past year.
U.S. Immigration and Customs Enforcement officials say Lopez-Abrego is a national of El Salvador and is illegally living in the U.S. ICE has now lodged a detainer against him following his arrest.
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He's since been extradited to Maryland and has a bond review slated for Wednesday afternoon. He had short, dark brown hair and was missing a bottom tooth near the front of his mouth.
Montgomery County police said the victim's body was found on September 5 in Wheaton Regional Park in in Wheaton, Md.
Then, the gang members choked him, stabbed him more than 100 times, decapitated him and dismembered him, the informant said.
On the day of the killing, one gang member allegedly "waited near the edge of the wood line with a handheld, walkie-talkie radio to alert" other suspects when the victim arrived, according to court records.
The unidentified victim's body was found clad in a gray sweatshirt with the words, "First United Methodist Church Laurel" written on the chest.
Montgomery County's State's Attorney John McCarthy has said MS-13 has been implicated in up to 18 murders over the past two years in Montgomery County.
A man was beheaded and had his heart ripped out by a gang before they buried him in a park near Washington DC, police have said.