Mar. 21—A notice to assert a defense of insanity was filed for a woman federally indicted for murdering her mother in Wilburton last month.

Tracy Ann Mannon, 51, was indicted March 13 in the Eastern District of Oklahoma for murder in Indian Country. Mannon was charged for the Feb. 26 death of her mother, Linda Barnes.

Mannon’s attorney filed a notice of intent to offer defense of insanity “to offer a defense that the defendant, at the time of the offense alleged in the instant case, was legally insane and, as a consequence, should be found not guilty by reason of insanity.”

Further hearings on the matter were not scheduled as of Wednesday.

Affidavits filed in the case state officers from the Wilburton Police Department were called Feb. 26 to a residence on West Caddo Avenue to conduct a welfare check after a neighbor called 911 and reported hearing screaming before “everything went quiet.”

The first officer arrived at the residence and was met with no response when he knocked on the front door, the affidavit states. The report states the officer saw the back door was open through a window and walked towards the back yard where he found Barnes lying on the ground with several wounds.

According to the affidavit, the officer saw a woman, later identified as Mannon, through a window “standing at the kitchen sink and washing dishes.”

After additional officers arrived, Mannon was placed into custody and “a protective sweep” of the residence was conducted and a knife with red stains was found in the sink where the woman was seen standing, the report state.

During an interview with investigators, Mannon admitted to pushing Barnes out the back door and stabbing the woman after she fell to the ground. Mannon said the knife was stuck inside Barnes, so she went to the kitchen to grab another knife and stabbed her mother “until she was deceased,” an affidavit states.

According to the report, Mannon said she tried to cut the body of her mother up to place in the container “but the knife she chose was too dull to complete the task.” Mannon then told investigators she removed her blood-stained clothing and wrapped the items in carpet before placing the items in her closet and was in the shower rinsing off when the first officer arrived before she was seen standing in front of the kitchen sink.

“Mannon stated she committed the crime of murder and felt no remorse for her actions,” the affidavit states.

A first-degree murder charge filed against Mannon in Choctaw Nation District Court will be held in abeyance until after a resolution in the federal case.