St. Paul, Minn. ? The teenage son of Red Lake Nation tribal chairman Floyd Jourdain has been arrested on federal charges stemming from last week’s deadly school shooting on the Red Lake Indian Reservation.

Louis Jourdain, 15, a student at Red Lake Senior High School where Jeff Weise fatally shot five students, a teacher, a security guard, his grandfather and the grandfather’s companion before killing himself March 21, was taken into custody Sunday evening, according to sources with knowledge of the arrest.

One of the sources, who spoke on the condition his name not be used, said Jourdain and Weise exchanged e-mails that discussed Weise’s intent to go on a shooting rampage at the school. Other teenagers who were in e-mail contact with Weise also could face charges in the coming days.

The sources declined to provide details about the correspondence, but indicated the alleged conversations between Jourdain and Weise were troubling enough to prompt the filing of conspiracy-related charges.

After the shooting, some students had said Weise had intimated last year that he planned some sort of violent act at the school last April, but they said they didn’t tell school officials or other authorities about it because they didn’t take him seriously.

The youth arrested Sunday reportedly was arraigned on the unspecified charge during a closed, 15-minute hearing Monday before U.S. Magistrate Raymond Erickson in Duluth.

Floyd “Buck” Jourdain, the leader of the Red Lake Band of Chippewa, was at the hearing, but declined to comment.

The Rev. Pat Sullivan smudges the casket of Red Lake High School security guard Derrick Brun during funeral services at St. Mary's Catholic Church in Red Lake, Minn. Brun was one of the seven people killed at Red Lake High School by Jeff Weise, a 16-year-old student. Weise also killed his grandfather, his grandfather's companion and himself. Three other funerals were conducted Monday, including one for Weise.

In all, Weise killed nine people and then himself. He began by killing his grandfather and the man’s female companion, then continued the killing spree at the school.

Weise, a self-described loner who was on anti-depressants and had had a troubled family life, was a prolific writer whose postings were scattered across numerous Internet discussion forums and chat groups. They ranged from his flirtation with neo-Nazism to writing short stories about zombies to discussions about Bigfoot.

U.S. Atty. Tom Heffelfinger said last week that investigators have interviewed more than 300 people in connection with the shootings.

Jourdain’s father earned praise for his handling of the aftermath of the shootings — the worst at a school since the Columbine killings in 1999 — which drew worldwide attention to the remote reservation in northwestern Minnesota.

One source with knowledge of the case said the alleged e-mails between Jourdain and Weise took place days and weeks before the shooting, and involved discussions in which Weise — and perhaps others — expressed an intent to commit an act of violence at the school.