VALLEY COTTAGE, NY – The Clarkstown Police Department has arrested an individual in connection with the May 26, 2020 Homicides of Wanda Castor, 63 and Kathleen Castor, 27 of Valley Cottage, NY. Robert C. Williams III, 32 of Hillcrest, NY, was arrested based on an investigation that spanned multiple states and included numerous law enforcement agencies. Mr. Williams has been charged with the following offenses, 2 counts of Murder 2nd (felony), Criminal Possession of Weapon 2nd (felony) and Criminal Contempt 1st(felony). He was arraigned via video conferencing in Rockland County Court on May 30, 2020 and remanded to the R.C. Jail.

District Attorney Tom Walsh said, “As we struggle living through a pandemic, the very core of Rockland’s way of life was rocked on May 26 upon hearing the news that Wanda Castor and her daughter, Kathleen Castor were brutally slain in a senseless act of rage and violence. Our sympathies go out to their family and most importantly to baby Anastasia, who was left at the scene unharmed but without a mother and grandmother. Rockland will not stand for these acts of violence. We will ensure justice is served. I commend the fantastic work of the Clarkstown Police Department and all the other agencies working to bring justice to this family.”

The following Law Enforcement Agencies have assisted the Clarkstown Police Department Detective Bureau in this extensive investigation:

NYPD Intelligence Division and Scuba Unit
Rockland County District Attorney
Rockland County Crime Analysis Center
Westchester County Crime Lab
FBI
ATF
Ramapo PD
Spring Valley PD
Haverstraw PD
Rockland County Sheriff Computer Crimes Task Force
Rockland County Solid Waste Authority
SUEZ Water

Video from the scene