Cold Case Detectives Identify Suspect of Unsolved Rapes and Murder; DNA and Genealogy Helped Solve the Crimes

Detectives from the Major Crimes Division – Cold Case Section have identified the suspect who committed a 1989 rape of a 53-year-old female and the 1994 rape and murder of 44-year-old Le Bich-Thuy.  The suspect, identified as Kenneth Earl Day, died in March 2017 in Upshur County, West Virginia, at the age of 52.

The two unsolved crimes in which Day has been determined to be the suspect are:

  • Rape
    • On June 25, 1989, at approximately 10:15 p.m., the 52-year-old victim was walking on Lewis Avenue in Rockville when the suspect approached her from behind, assaulted her, and raped her. Suspect DNA evidence was recovered.


  • Rape and Homicide
    • On October 3, 1994, Le Bich-Thuy, age 42, was located deceased to the side of her home in the 1600 block of Martha Terrace in Rockville. The investigation by detectives revealed that Le Bich-Thuy had been assaulted, raped, and then strangled.  Investigators further determined that Le Bich-Thuy was last known to be alive at approximately 10:00 p.m. on September 28, 1994 as she left the Twinbrook Metro Station in Rockville.  Suspect DNA evidence was recovered.

During the investigation of these crimes, an analysis of the suspect DNA left at these two scenes determined that the same suspect committed both rapes and murder.  The suspect’s DNA was entered into a national DNA database (Combined DNA Index System – CODIS) but there was no match.  Despite extensive investigative efforts, these cases remained unsolved.

In 2017, Cold Case detectives sought the services of Parabon NanoLabs (Parabon), a DNA technology company in Virginia that specializes in DNA phenotyping, or the process of predicting physical appearance and ancestry from unidentified DNA evidence. Using the suspect’s DNA left at these scenes, Parabon’s Shapshot DNA Phenotyping Service produced what is referred to as a Snapshot composite depicting how the suspect in these cases may have looked and predicting his ancestry.  In hopes of generating new leads in these cases, detectives released the composite to the public and hoped that someone would recognize him.

More recently, Parabon submitted a genetic data profile of the suspect’s DNA to the publicly available genetic genealogy database, GEDmatch, in order to potentially find individuals who shared a significant amount of DNA with the unknown suspect.

Additional investigation, which included genealogy research, was then conducted by Cold Case investigators and led to the identification of Day as the suspect of these rapes and murder.

It was determined that Day had died in Upshur County, West Virginia, in March 2017.  Detectives obtained a sample of Day’s DNA taken from his autopsy.  The Montgomery County Department of Police – Crime Laboratory processed Day’s DNA and determined that it was a positive match to the suspect’s DNA profile taken as evidence from both crime scenes.

At this time, the Cold Case Section continues to investigate Day’s possible involvement in other unsolved crimes.  Photographs of Kenneth Earl Day taken at various dates and a list of Day’s prior known addresses with the approximate dates he lived at those locations are below.

Anyone with information about Kenneth Earl Day is asked to call the Montgomery County Department of Police – Major Crimes Division, Cold Case Section at 240-773-5070.  Callers may remain anonymous.

Prior known addresses for Kenneth Earl Day with approximate dates:

1989: 500 block of Beall Avenue, Rockville, MD 20850

1988: 100 block of Willowdale Drive, Frederick, MD 21702

1990-1991: 20000 block of Frederick Road, Germantown, MD 20876

1990: Unit block of Whetstone Drive, Gaithersburg, MD 20877

1992: 11700 block of Zebrawood Court, Germantown MD 20876

1993-1994: 12300 block of Selfridge Road, Silver Spring MD 20906

1994-2000 block of Baltimore Road, Rockville, MD 20851

1997-1999: 14400 block of Belvedere Drive, Woodbridge VA 22193

2002-2004: 11800 block of Renner Road, Keymar, MD 21757

Late 2000’s: 10300 block of Mumma Ford Road, Rocky Ridge, MD 21778

Late 2000’s: Unit block of Heavner Grove Road, Buchannon, WV 26201

Kenneth Earl Day – 1989 – age 24

Parabon composite of suspect at 25 years of age.








Kenneth Earl Day – 1994 – age 29


Kenneth Earl Day – 1999 – age 34

Kenneth Earl Day – 2001 – age 36

Kenneth Earl Day – 2003 – age 38

Kenneth Earl Day – 2005 – age 40


Parabon composite of suspect at ~60 years of age.

Montgomery County School Teacher Arrested on Child Pornography Charges

Today, the detectives from the Montgomery County Department of Police – Special Victims Investigations Division, Child Exploitation Unit, arrested Daemon Alan Dartouzos, of the 20300 block of Sandsfield Terrace in Germantown, charging him with ten counts of Possession of Child Pornography.

Dartouzos is employed by the Montgomery County Public Schools as a Physical Education teacher at Ashburton Elementary School in Bethesda.  Inquiries regarding Dartouzos employment status should be directed to MCPS.

These charges are a result of an extensive investigation by detectives from the Child Exploitation Unit in coordination with the Federal Bureau of Investigation. Detectives do not believe that the images of child pornography related to this investigation involved any MCPS students.

Detectives are urging anyone who has information regarding Daemon Dartouzos or these incidents to contact the Child Exploitation Unit at 240-773-5400.

Bond information is currently unavailable.

Daemon Alan Dartouzos













Massage Therapist Charged with 4th Degree Sex Offense; Possibility of Additional Victims a Concern

Joshua Johnson

Detectives from the Montgomery County Department of Police – 6th District Investigative Section charged Joshua Weston Johnson, age 36, of the 7000 block of Yankee Harbor Drive in Montgomery Village with 4th Degree Sex Offense and Second-Degree Assault.

On December 10, 2018, the victim filed a police report with the Montgomery County Police, stating that a massage therapist touched her inappropriately during the massage. As a result of the police investigation, detectives identified Joshua Weston Johnson as the suspect. Johnson was served with a District Court Summons on February 22.

Johnson worked as a private massage therapist at a spa in the Kentland area. It is believed that Johnson may have worked as a private massage therapist at different spas in the Montgomery County area as well. Investigators have concerns that there may be additional victims related to this crime. Anyone with further information is asked to contact the 6th District Investigative Section at 240-773-5770.


Update: Suspect Arrested for Inappropriate Touching of Child at Rockville Memorial Library

Detectives from the Montgomery County Police Department – Special Victims Investigations Division (SVID) have arrested and charged Keelan M. Sternklar, age 26, of an unconfirmed address, for committing a third-degree sexual offense and second-degree assault against a five-year-old female on December 15 at the Rockville Memorial Library located at 21 Maryland Avenue.

On Saturday, December 15, at approximately 6:00 p.m., Rockville City Police officers responded to the Rockville Memorial Library for the report of a suspect who had pulled down the victim’s pants and inappropriately touched her while she was in the children’s section of the library. 

During the investigation, surveillance photographs of a person of interest were disseminated to law enforcement personnel within Montgomery County and then released to the media and public. 

On Thursday, December 20, at approximately 6:00 p.m., a Rockville City Police officer observed a male inside a coffee shop in Rockville (located approximately one block from the Rockville Memorial Library) who looked like the person of interest in this investigation.

At approximately 11:30 p.m., MCP officers arrested the male at a homeless shelter facility located at 16911 Crabbs Branch Way in Derwood and identified him as Sternklar.  During an interview with detectives, Sternklar stated that he was in the library during the time that the sexual offense occurred.

Sternklar was transported to the Central Processing Unit for processing.  Bond information is not yet available.

Thank you to the Rockville City Police Department for their assistance in this investigation.


Note: Currently, the mugshot of Sternklar is available on the Department’s social media.  The mugshot will be added to this release at a later time.


Update: Detectives Investigate Report of Inappropriate Touching of Child at Rockville Memorial Library; Photographs of Person of Interest Released

Detectives from the Montgomery County Police Department-Special Victims Investigations Division (SVID) continue to investigate the report of a man inappropriately touching a five-year-old girl at the Rockville Memorial Library.

The incident occurred at the Rockville Memorial Library located at 21 Maryland Avenue on Saturday, December 15, at approximately 6:00 p.m. The suspect approached the child in the children’s section of the library, pulled down the girl’s pants, and touched her inappropriately. The child screamed and went and told her parents, who then called police.

Investigators reviewed library video surveillance and observed a man lingering in and around the children’s section for approximately thirty minutes before this incident occurred.  This person is now being considered a person of interest in this case and photographs of him are being released to the public.  Investigators would like to talk to this man.

Anyone with information about this crime or information about the male in the photographs is asked to call detectives at 240-773-5448.