18-year-old suspect due in U.S. District Court today.

Reehahlio Carroll, the 18-year-old who is suspected of killing Sister Marguerite Bartz at a Navajo, N.M., convent on Oct. 31, was turned over to the FBI late Tuesday night, according to KRQE News 13.

Carroll was being held on a tribal charge of reckless driving at the Navajo Nation jail in Window Rock, Ariz., and Navajo Nation Chief Prosecutor Bernadine Martin was initially reluctant to hand him over to federal authorities because she said the proper paperwork hadn't been filed, News 13 said.

He is expected to make an appearance in U.S. District Court in Albuquerque today, KRQE reported.

6:00am 11/11/09 -- Navajo Jail Ordered to Turn Over Slaying Suspect: Federal judge says teen accused of killing nun must be handed over to FBI.

A federal judge on Tuesday ordered the Navajo Nation jail to turn over 18-year-old Reehahlio Carroll, who is accused of killing Sister Marguerite Bartz at her reservation convent on Oct. 13, to the FBI, KRQE News 13 reported.

Carroll, who was arrested last Thursday and charged with killing the nun while burglarizing her residence for money to buy drugs and alcohol, was being held by Navajo authorities on lesser charges related to the theft of the nun's car and had not been released to federal authorities, News 13 said.

In the past, FBI agents were able to pick up suspects from tribal lands without a court order from a federal judge, but Navajo Nation Chief Prosecutor Bernardine Martin told the feds last Friday that the days of sidestepping Navajo rules are over, according to KRQE.

"My oath is to the Navajo Nation law; my oath is to the government and my oath is to the people," Martin told News 13. "It is not to the federal government."

Martin said she will no longer allow federal agents just to flash a badge to take custody of a suspect, KRQE reported.

With Tuesday's order, however, Carroll will be in federal court on Thursday to face murder charges after FBI agents pick him up from the tribal jail in Window Rock, Ariz., the station said.

Breaking at 9:45am 11/5/09 -- FBI Makes Arrest in Nun's Slaying: One taken into custody early this morning in Navajo, N.M.; no other details.

An arrest was made early this morning in Navjo, N.M., in connection with the slaying of Sister Marguerite Bartz, FBI spokesman Darrin Jones said in a terse news release.

No further details are being released at this time, said Jones, who said he hoped to have a more detailed news release early this afternoon.

Meanwhile, it was reported in this morning's Albuquerque Journal that a preliminary medical examiner's report found that the 64-year-old Roman Catholic nun, whose body was found Sunday at her convent at St. Berard Mission Church in Navajo, was most likely killed by blows from an attacker.

Investigators have ruled out the possibility of sexual assault, and the killing was not a hate crime, Jones told the Journal on Wednesday.

Bartz was killed between Saturday night and midday Sunday, Jones said.

"Sister Bartz did suffer substantial trauma, likely as a result of a violent confrontation with her assailant or attacker," the FBI said Wednesday.

The vehicle Bartz had been driving, a 1995 Honda CR-V with New Jersey license plates, was found this week abandoned on a remote rural road near Cottonwood, Ariz., about 20 miles west of Chinle, Ariz., the Journal reported.