Alex Cox.

YouTube screen grab showing Alex Cox who killed Lori Vallow’s ex husband Charles Vallow.

A forensic scientist who testified duringLori Vallow Daybell’songoing murder trial revealed that fingerprints were found on a piece of plastic that was recovered with Lori’s son’s remains.

The print matched Lori’s brother Alex Cox and another latent fingerprint matchedCox’s palm, according to Martinez, the outlets report.

In June 2020, the remains of Lori’s children Tylee, 16, and J.J. were found buried on an Idaho property that belonged to Chad Daybell, Lori’s fifth husband.

Cox has always been a central figure in the investigation into what happened to Tylee and J.J., who were last seen in September of 2019.Cox’s cell phone recordsallegedly placed him at the property where the children’s remains were found on two dates that aligned with the last time they were seen. Cox died on Dec. 12, 2019 at 51 years old of what authorities have said were natural causes.

Lori is charged with murder in connection with the deaths of J.J. and Tylee and conspiracy to commit first-degree murder in the death of Chad’s first wife Tammy Daybell.

Lori Vallow Daybell.Dennis Fujimoto/AP/Shutterstock

Lori Vallow

Yesterday, J.J.’s cause of death was revealed.

“What was left of Tylee was found. Charred remains. A mass of bone and tissues. That was what was left of this beautiful young woman,” Fremont County Prosecuting Attorney Lindsey Blake said during the first week of trial. “Her DNA was discovered on a pickaxe and shovel and later found in Daybell’s shed.”

Joshua “J.J.” Vallow, at left, and his sister Tylee Ryan.

Tylee Ryan and Joshua Vallow

Blake also revealed during opening statements thatTammy’s cause of death was asphyxiation. Tammy, 49, died in October 2019 — weeks after Lori’s children disappeared and weeks before Lori and Chad got married in Hawaii.

Chad is charged in connection with the deaths of Tylee, J.J. and Tammy, but will be tried separately. He has pleaded not guilty.

Chad Daybell.Rexburg Police Department

Chad Daybell

Lori’s trial is ongoing.

If you suspect child abuse, call the Childhelp National Child Abuse Hotline at 1-800-4-A-Child or 1-800-422-4453, or go to www.childhelp.org. All calls are toll-free and confidential. The hotline is available 24/7 in more than 170 languages.

source: people.com