Mercer County Prosecutor Angelo J. Onofri reported today that an investigation by the
Mercer County Homicide Task Force has led to the arrest of a Ewing man for last week’s
murder of Katherine Montenegro at a Hamilton Township 7-Eleven.
Joshua Lopez, 23, was taken into custody in Ewing Township late Monday evening by
members of U.S. Marshals NY/NJ Regional Fugitive Task Force with assistance from the
Mercer County Tactical Response Team, Mercer County Homicide Task Force and
Mercer County Narcotics Task Force. He is charged with one count of first-degree
murder, one count of second-degree possession of a weapon for an unlawful purpose,
one count of second-degree unlawful possession of a weapon and one count of second-
degree certain persons not to possess a firearm. The prosecutor’s office has filed a
motion to detain Lopez pending trial.
On Tuesday, May 18, 2021, at approximately 1:50 a.m., Hamilton Police Division Patrol
Units responded to a shooting in progress in the parking lot of the 7-Eleven on Lalor
Street. Officers arrived on scene and located the victim, identified as 23-year-old
Katherine Montenegro of Trenton, lying in the parking lot near the storefront curb suffering
a gunshot wound to the abdomen. She was transported to the hospital where she was
pronounced dead a short time later.
As part of the investigation conducted by the Mercer County Homicide Task Force, area
video surveillance was reviewed, and witnesses were interviewed. Detectives
established that Lopez and the victim were acquaintances, and Lopez was identified as
the suspected shooter.
The murder remains under investigation and anyone with information is asked to call HTF
Detective Ahmad Mansur at (609) 989-6406. Information can also be emailed to
Despite having been charged, every defendant