POPLAR, Mont. – A 13-month-old girl who was abducted from her home in Poplar on Tuesday night has been found dead.

Lee Allmer, Roosevelt County public information officer, said authorities found Kenzley Olson dead in Poplar on the Fort Peck Indian Reservation on Wednesday, April 20.

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One person is in custody in connection with the death and officials from the Roosevelt County Sheriff's Office and the Federal Bureau of Investigation, which is in charge of the investigation, were questioning the detained person. The name of the person in custody was not released.

Law enforcement officers were searching for additional people on Wednesday in connection with the death, Allmer said.

"There may be others that are detained at some point," he said. "No charges have been brought to my knowledge."

A cause of death had not been determined. No further details were available.

The Montana Department of Justice canceled an Amber Alert issued early Wednesday for the girl.

Authorities said they've ruled out two persons of interest from North Dakota earlier named in the Amber Alert as people who have taken the girl from her Poplar home.

The Amber Alert was issued Wednesday morning, reporting that the girl was taken at about 9 a.m. Tuesday.

The initial alert said the North Dakota man and woman may have been headed to Minot, N.D., in a silver 2006 Chrysler 300C.

The woman, Melinda Tweet, 51, and the Chrysler were located in Minot on Wednesday and the people were ruled out as suspects. Police also said that Tweet and a man could not have been involved as they were accounted for Tuesday. However, Minot police said late Tuesday afternoon that Tweet and her son, Tyler Moulton, 25, were arrested on firearm and drug charges after police made contact with her in regard to the case about 7:45 a.m. Wednesday.

Police said Tweet and her son were acquaintances of the abducted child's mother.

Tweet was charged with felon in possession of a firearm, possession of methamphetamine, two counts of drug paraphernalia possession and ingestion of meth. Moulton was arrested on charges of possession of meth and possession of drug paraphernalia.

The two were taken to the Ward County Jail.

Poplar is a town of about 850 people on U.S. Highway 2 in northeastern Montana, on the edge of the reservation which is home to about 10,000 people.

Olson's death followed the Feb. 26 abduction of a 4-year-old girl from a public park in Wolf Point, a town about 20 miles west of Poplar also in Roosevelt County. An Amber Alert also was issued in that incident.

The girl was found alive on Feb. 28, and John William Lieba has been charged in Fort Peck Tribal Court in the incident.

Lieba, 20, pleaded not guilty on March 1 to charges of kidnapping, attempted murder and aggravated sexual assault of a minor.

Judge Marvin Youpee ordered him held without bail.

Anyone with information regarding Olson's disappearance can call 911 or contact the Roosevelt County Sheriff's Office at (406) 653-6240.