The four men and one woman were among a dozen people indicted last week accused of plotting and executing a plan to kill Doug and Debbie London.
IMAGES:Suspected gang members charged in federal indictment
Federal prosecutors say all of them are associated with the United Blood Nation (UBN) gang.
Rahkeem McDonald, Ahkeem McDonald, Randall Hankins, Daquan Everett and Centrilla Leach appeared before Judge David Cayer requesting a bond. Prosecutors, however, called them all too dangerous to set free.
Officials: Accused gang member ordered killing of couple from jail
"There is no condition that would reasonably assure the safety of the community," said Prosecutor Beth Greene.
Greene outlined new details in the federal investigation of the case. She said shortly after the murders of the Londons, Rahkeem McDonald burned a letter that contained written instructions for the killings.
Greene also said an FBI search found the murder weapon buried near a home where at least three alleged gang members lived.
IMAGES:Scene of Lake Wylie double homicide from Chopper 9
She said the FBI has recordings of conversations between alleged ringleader, Jamel Cureton, and Randall Hankins, in which Cureton allegedly discussed the murder plot. Greene read aloud from a transcript, saying Hankins said, "I'm already on it. We got a plan."
Investigators said the Londons were murdered, because Doug London was the only witness in a robbery case involving Cureton.
PDF:Indictment after suspected gang members arrested in connection with killings
They said Cureton was shot by Doug London during the robbery and that the murder plot was retaliation.
CHARLOTTE, N.C. —
Prosecutors said federal agents aren't the only ones who used surveillance techniques. They said Centrilla Leach, who was Cureton's girlfriend, followed Debbie London and even took pictures of her when she attended a hearing in the robbery case.
Family members packed the small courtroom during the hearings and mouthed, "I love you" to the suspects. Outside, Ellen Durham, a friend of Randall Hankins' mother said she wasn't sure what to make of the allegations.
"The truth will come out," Durham said. "Whatever it is."
Each of the defendants whose bond was denied pleaded not guilty and asked for a jury trial.
One defendant, Nehemijel Houston, had his case continued until later in the week.
Timeline of events:
- Apr. 22, 2015: FBI raids Charlotte cell of United Blood Nation, arrests seven gang members on variety of charges. Four of those arrested are charged in Connection with murder of Londons.
- Jan. 30, 2015:Police said that Malcolm Jerrel Hartley, 22, and Brianna Johnson, 18, are arrested in connection with the double homicide investigation of the Londons.
- Dec. 2, 2014: Cureton and Adoma plead not guilty in the armed robbery case, officials said. David Fudge, who drove the getaway car, was sentenced to probation after his guilty plea earlier in the year.
- Oct. 30, 2014:Federal prosecutors take over the armed robbery case that accuses Jamell Cureton and Nana Adoma of robbing the Londons' mattress store.
- Oct. 23, 2014: Doug and Debbie London are found shot to death in their Lake Wylie home.
- May 25, 2014:Two men rob the Wholesale Mattress Warehouse on South Boulevard owned by Doug and Debbie London. One of the robbers and Doug London exchange gun fire, police said.
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