CENTENNIAL, Colo. - The dismembered body found in the back of a crashed SUV has been identified as a 56-year-old Centennial woman.
The Arapahoe County Coroner's Office said an autopsy identified the remains as that of Beverly Liggett.
Her son, 24-year-old Ari Misha Liggett, is being held for investigation of first-degree murder in connection with her death.
The coroner's office said Thursday that the cause and manner of death of Beverly Liggett are pending further studies.
Her body was found in the back seat of an SUV that crashed during a pursuit early Wednesday in Greenwood Village. The Arapahoe County Sheriff's Office said Ari Liggett was driving the car.
According to police dispatch radio, Ari Liggett called authorities and said he was driving with his mother's dead body.
"The (reporting party), who could possibly be driving the vehicle, is going to be (last name) Liggett, first of Ari. (He) stated that he was going to bury his dead mother yesterday and she was possibly in the vehicle, (her last name is) Liggett, first of Beverly. And also, the party is possibly armed and dangerous," said the dispatcher. "(The) party's known to manufacture his own firearms, weapons and poisonous gas. Consider officer safety."
After the vehicle crashed, officers on scene were told to wait on approaching the vehicle.
"(Arapahoe) County's advising don't touch the car at all, the bomb squad is apparently going to come and look at it," said the dispatcher.
Family members reported on Monday that Liggett and her son were missing and the family was concerned for their welfare. The mother and son had resided together at 6223 East Peakview Ave.
Investigating deputies found a suspicious liquid inside the home. Preliminary testing determined that the suspicious liquid appeared to be potassium cyanide.
Court records obtained by The Denver Post show that during a search of the Centennial home, investigators found traces of human blood in the freezer and bathtub. They also found a crosscut hand saw and large kitchen knife in the dishwasher.
A cat was also found dead under a bed, according to The Post.
After his arrest on Wednesday, Liggett told authorities that he found his mother dead in the living room and that he believed she had committed suicide by ingesting potassium cyanide that was in a shot glass in the refrigerator, according the Post. Liggett said he panicked and put her body into a freezer, according to court records.
"Even though there was potassium cyanide in this home, this community was never in jeopardy," said Arapahoe County Sheriff Grayson Robinson. "The only harm that that toxic chemical presented was inside that home and to individuals that were in that home without protective gear on."
In March 2010, Liggett was arrested after a Boulder Homeless Shelter hazmat incident.
The shelter was evacuated after Liggett told police he was storing hazardous chemicals in a suitcase there. Granular material in a mason jar was found inside a suitcase and the shelter was shut down for seven hours while the investigation was conducted.
Tests on the chemical were inconclusive.
Liggett was arrested on a warrant for allegedly possessing a homemade silencer for a gun. Court records related to the 2010 hazmat incident and the current investigation into his mother's death have been sealed by an Arapahoe County judge.
According to Robinson, he was not charged for possessing chemicals, but rather having a silencer for a weapon.
"He was not a danger to our community. I believe he might have been considered a danger to family members, and it's obvious based on what we're investigating," said Robinson.
7NEWS asked Robinson about a possible link to the Jessica Ridgeway case.
"We have discussed the situation with various entities and do not believe there is a link at this time," Robinson said.