Photo: National Center for Missing & Exploited Children

ANew Jersey serial killeralready serving 160 years in prison for the 2016 murders of three women is now accused of killing a fourth person, PEOPLE learns.
A statement from the Essex County Prosecutors' Officeconfirms Khalil A. Wheeler-Weaver, 24, was formally charged on Thursday with murdering 15-year-old Mawa Doumbia.
According to the statement, Doumbia had been reported missing in late 2016 — the same year that Wheeler-Weaver lured Sarah Butler, 20, Robin West, 19, and Joanne Brown, 33, to their brutal deaths using various online dating apps.
Years later, that woman testified against Wheeler-Weaver during his criminal trial.
According to investigators, the last time Doumbia was seen alive was on Oct. 7, 2016, as she was leaving her family’s Newark home.
This past November, medical examiners positively identified them as Doumbia’s remains.
Khalil Wheeler-Weaver.

The statement indicates that investigators uncovered digital evidence that implicates Wheeler-Weaver in the killing.
“Wheeler-Weaver met the young girl online and solicited her to meet him in person for sex,” reads the statement. “It is alleged that he traveled to the area of her residence then to the murder scene where he strangled her to death and left her remains concealed within the vacant building.”
It was unclear Friday if Wheeler-Weaver had appeared before a judge to plead to the new charge. His lawyer could not be reached for comment.
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According to investigators, Wheeler-Weaver committed his crimes over an 88-day period in 2016.
If you or someone you know has been sexually assaulted, please contact the National Sexual Assault Hotline at 1-800-656-HOPE (4673) or go torainn.org.
source: people.com