The suspect Lopez is staying illegally in the United States and is from El Salvadoran said the Immigration officers.
Authorities allege that the gang members had been planning the killing for two weeks.
The informant led police to the grave on September 5 and "detailed the choking, stabbing, decapitating and dismembering [of] the Victim's body", according to a police affidavit.
The gang members allegedly lured the victim, a Hispanic man believed to be from Annapolis, to the area using walkie-talkie radios to communicate.
Police in Maryland have charged an El Salvadorean gang member with murder after a man was lured to a park on the outskirts of Washington DC, stabbed 100 times and decapitated before having his heart cut out.
The official cause of death was 'sharp force injuries, ' according to the autopsy. They threw the organ into the grave, along with the headless body.
Police found the body buried in a grave, deep in the woods of Wheaton Regional Park, Maryland, that the attackers dug before the slaying, according to court records.
Court documents do not specify what motive the alleged killers had to commit the crime. He has a bond review Wednesday at the Rockville District Court. The deputies and agents found Portillo-Rodriguez, Lopez-Abrego and a third MS-13 member attempting to hide inside, Frye said.More news: India seeks security guarantees from Pakistan for Jadhav's wife
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Police said they tried to locate Lopez-Abrego after that interview but could not until he was found November 4 in North Carolina with two other reported MS-13 gang members from the Washington area.
The US Immigration and Customs Enforcement (ICE) released a statement addressing Lopez-Abrego's legal status in the country. The informant told police that Lopez-Abrego was the first person to stab the victim, thrusting a 15-inch knife into the chest.
Police are still working to identify the victim.
The victim was found wearing a gray sweatshirt with the words "First United Methodist Church Laurel" written on the left chest of the shirt with a gray hooded long-sleeve shirt underneath with black sweat trousers and blue athletic shorts underneath the number "19" printed on the left side.
The man was also wearing black sweatpants with blue athletic shorts underneath them when police recovered his body along with a rosary or necklace.
The investigation shows that the MS-13 gang, which was founded by El Salvadoran immigrants, was behind the murder.
The ultra-violent Latino street gang works as an umbrella grouping of units, some of which are larger and more violent than others.
MS-13 is a "transnational criminal organization" engaged in such crimes as drug trafficking, kidnapping, human smuggling, prostitution, murder and extortion.