Chilling new details emerge in case of mom who murdered her four kids before taking her own life

A Wyoming mom who murdered her four children before turning the gun on herself has had shocking details emerged about the day of the killings.

Tranyelle Harshman, 32, alerted police in Byron, Wyoming, after shooting her four children in their home, killing three almost instantly before turning the gun on herself.

Authorities reported that 911 received a call 1:30 p.m. local time on February 10 and a female caller reported ‘gunshots that occurred inside her home and further reported her daughters had been shot’.

The Big Horn County Sheriff’s Office press release stated: “When dispatchers asked the status of the gunshot victims the female stated that she believed them to be deceased.

“She told them two children would be located upstairs in their cribs and two would be located downstairs in their shared bedroom.

The mother killed her four children (KTVQ)

“The caller further stated she could be found in her upstairs bedroom and that she was going to do the same to herself.”

When the police arrived at the home, they found a 2-year-old and 9-year-old dead and a 7-year-old and another 2-year-old daughter alive, however, the 2-year-old would die at the scene.

All four children were shot in the head, PEOPLE reports.

Harshman, found with a single gunshot wound to her head, but was alive before succumbing to her injuries in hospital.

The 7-year-old girl was taken to a local hospital where she was ‘provided advanced life support’ before being airlifted another hospital for an ‘advanced level of care’, as per the release, but sadly passed away five days later.

A toxicology report has now revealed that before the killings, Harshman had ketamine and anti-anxiety drugs in her system, in the form of clonazepam.

The drug is often prescribed to help panic disorders and epilepsy, and can be also known as the brand Klonopin.

Clonazepam, a sedative, has side effects such as paranoia, suicidal ideation, and impairment of judgement, coordination, and memory.

Ketamine can have hallucinogenic effects and it is only FDA approved as an anesthetic, but not to treat mental health disorders, as per Johns Hopkins University.