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DNA Links Man To Unsolved Rape Of Teen, Who Was Attacked While Going For A Walk In 1995, Police Say

Ralph Leslie Kroll allegedly forced the victim into an apartment complex in Riverside, California where he sexually assaulted her.

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How To Use DNA To Crack A Case
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How To Use DNA To Crack A Case

Seasoned investigator Paul Holes explains how genetic genealogists and authorities use DNA to heat up cold cases like the Golden State Killer. To help identify unknown suspect or victim DNA from a crime scene, genealogists upload the DNA sample to a database. Then, they reverse-engineer the family tree of the unidentified person by comparing it to the family trees of people with whom they share DNA.

A California man has been arrested after DNA linked him to the unsolved 1995 rape of an 18-year-old girl, authorities say. 

Ralph Leslie Kroll, 49, was arrested in early October after DNA evidence allegedly tied him to the 25-year-old sexual assault, the Riverside Police Department announced on Friday.

In October 1995, an 18-year-old girl was walking in Riverside when a stranger attacked her. 

“The suspect forced her into a nearby apartment complex where he committed a sexual assault," police stated.

No arrests were made at the time.

“Investigative leads were exhausted and unfortunately, this remained a cold case until DNA evidence was able to identify the suspect,” the press release states.  

Ralph Kroll Pd

Since recent advancements were made in DNA technology, genetic genealogy work in private labs has led to the identification of serial killers and rapists like the Golden State Killer. 

Investigators have reportedly been eyeing Kroll since 2015, local outlet the Press-Enterprise reports. 

Kroll was arrested on Oct. 8 at his home in Eastvale by both local police and the U.S. Marshals Service.

He has been charged with rape by force, kidnapping, and the use of a deadly weapon by a sex offender. He is being held on a $1 million dollars bail, according to online jail records. It’s not clear if he has a lawyer.

Anyone with information on the investigation and on Kroll is asked to urged to call Riverside Police Department  Detective Karla Beler at 951-353-7138 or email her at kbeler@riversideca.gov.  Anyone wishing to remain anonymous can email rpdtips@riversideca.gov or utilize the Riverside Police Department’s mobile app “Submit a Tip” feature while referencing report number P395281060.

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