Louis Jourdain, 16, the son of Red Lake Band of Chippewa Chairman Floyd Jourdain Jr., appeared in federal court in Duluth on Tuesday. The hearing was closed to reporters and court officials would not comment because it was a juvenile proceeding.
A government official briefed on the investigation told The Associated Press that prosecutors were considering charging the teen as an adult with conspiracy to commit murder. That official spoke on condition of anonymity because the investigation is ongoing.
Esme Murphy of CBS Station WCCO-TV reports that a conspiracy charge is coming for the teenager, who was brought to court in hand and leg shackles. In the hearing, the judge heard arguments from the prosecution that he is a threat and should remain in custody. The defense argued he has no record and is not a flight risk.
Sources say prosecutors have evidence that allegedly shows Jourdain helped plan the attack, Murphy reports.
The Washington Post, citing family members and law enforcement officials, reported the conspiracy charge was already filed.
Jourdain's attorney, Jon Hopeman, told the AP he could not comment because it was a juvenile proceeding.
Jeff Weise, 16, killed his grandfather and the grandfather's companion, then went to Red Lake High School and killed five students, a teacher and a guard, before killing himself. It was the worst U.S. school shooting since the attacks by a pair of students at Columbine High in Colorado in 1999.
In announcing Jourdain's arrest Monday, U.S. Attorney Tom Heffelfinger would not give any details on the youth's role in the case.
Weise and Jourdain were members of a clique of about five students known as "The Darkers," who wore black clothes and chains, spiked or dyed their hair and loved heavy-metal music, according to the Minneapolis Star Tribune, the St. Paul Pioneer Press and the Duluth News Tribune.
Two students, Jourdain Warmington, 15, and Jazz Jourdain-Warmington, 14, told the Minneapolis newspaper that when the shootings started they were in the library and that Jourdain yelled that the shooter was Weise — before anyone in the library saw the gunman. The two girls' relationship to each other and to Jourdain was not immediately clear.
Jourdain-Warmington said Jourdain ran out of the library, saying he had to talk to Weise.
There is also a report in "USA Today" on Wednesday that Weise, was shot in the hip and leg by a police officer before he took his own life.
Sources told WCCO-TV that the FBI has stepped up their interviews of Jeff Weise's friends, especially those who gathered with Weise at a friends house 17 days before the shooting to watch the award-winning movie, "Elephant," which features scenes of two high schoolers planning and then gunning down classmates.
Sources have said Jourdain and some of the other teens being questioned say they considered any talk or internet chatter about school violence was just a game. But clearly, authorities don't see it that way and sources say it is possible there will be more arrests, Murphy reports.
Authorities began to suspect Weise may not have plotted the attack by himself after examining his computer and the e-mails he exchanged with Jourdain, said the government official who asked to remain anonymous.
The New York Times reported Tuesday that an official who spoke on the condition of anonymity said the e-mails suggested Weise and Jourdain planned an attack on the school, with graphic discussions about logistics and targets. The official also said Jourdain had told investigators that he never had any intention of going through with the plan and that he did not believe Weise did, either, the paper reported.
Floyd Jourdain said he was confident an investigation would clear his son.
"It is with optimism that I state my son Louis's innocence," Floyd Jourdain Jr. said in a statement. "He is a good boy with a good heart, who never harmed anyone in his entire life."