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Florida police make arrest in 35-year-old cold case homicide using familial DNA

DNA sample obtained from the scene of the crime through an open-source genealogy database and identified several different people believed to be distant cousins of the suspect.

March 22, 2020

PENSACOLA, Fla. – Tonya Ethridge McKinley was 23 years old and had an 18-month-old son waiting for her at home when she was killed in the early-morning hours of Jan. 1, 1985, in Pensacola.

The young mother was last seen alive around 1:30 a.m. at Darryl's Bar & Grille in Pensacola. Her body was discovered in the early-morning hours of New Year's Day, in an empty lot, off Scenic Highway. She was half-nude, strangled to death and sexually assaulted, Pensacola News Journal reported.

After 35 years, Pensacola police made an arrest in the case on Wednesday. The suspect was identified as Daniel Leonard Wells, 57. He is facing charges of first-degree murder and first-degree sexual battery.

Wells was identified after Parabon NanoLabs, a Virginia-based company working with the Pensacola Police Department and the Florida Department of Law Enforcement, ran a DNA sample obtained from the scene of the crime through an open-source genealogy database and identified several different people believed to be distant cousins of the suspect.

From there, Pensacola police, FDLE and Parabon constructed a family tree, starting with the distant relatives, that eventually led them to identify Wells as a suspect. During the investigation, law enforcement surveillance teams surreptitiously obtained his DNA from a discarded cigarette, which was tested and matched DNA found at the crime scene.

"This was a case that spanned three generations of detectives," said PPD Capt. Chuck Mallett, who led the investigation. "I know it took a long time, but it was one of those cases we never gave up on."

Wells is being held without bond at Escambia County Jail and will make his first court appearance Thursday morning.

According to court records, Wells was arrested in Pensacola in 1987 on battery and witness tampering charges, but the witness tampering charge was dropped after he pleaded no contest to the battery charge. In 1988, he was arrested on suspicion of solicitation of prostitution in Pensacola. Court records did not indicate the outcome of that case.

Investigators collected semen, head hair and pubic hair from her body and the crime scene. Years later, thanks to advances in DNA testing, all of the evidence was identified as being from the same person, but no matches were ever found in the national DNA database, according to PNJ.

McKinley's father died in April 2000. Her mother, Laverne, lives with family. Her son is Timothy Davidson Jr., who family members affectionately referred to as "Timbo" when he was a child.

"My mom, she never got to raise me, never got to be a part of my life," Davidson said after the arrest. "(Wells) got to live his life the last 35 years. He got to have a family. He got to be around his children … and all those years he was out there, knowing what he did. He was carrying it around with him and he was never going to tell anyone what he did. He wasn't going to ever just say what he did on his own.

"Nothing could ever make up for losing my mom, but at least now we know what happened to her."

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