Somerville Man Charged With Sexually Assaulting Preteen By Sexual Contact

Friday, January 23, 2026, 12:30 P.M. ET. 2 Minute Read, By Art Fletcher: Englebrook Independent News,

MANVILLE, NJ.- Earlier this month, following a months-long investigation, a 38-year-old Somerville, New Jersey, man was taken into custody and charged in connection with allegedly showing a preteen girl sexually explicit photos and then sexually pleasuring himself in front of her early last year in Manville Borough, New Jersey.

     According to Somerset County Prosecutor John P. McDonald, on January 9, 2026, Isaias Vielma-Hernandez, 38, of Somerville, New Jersey, was taken into custody and formally charged with second-degree Sexual Assault by Sexual Contact; third-degree Endangering the Welfare of a Child; and third-degree Obscenity to a Minor. Vielma-Hernandez was apprehended in Bedminster, New Jersey, and, following being processed on the charges, was remanded to the Somerset County Jail. 

     Vielma-Hernandez was subsequently released on monitoring conditions pending future court proceedings in Somerset County Superior Court in Somerville, New Jersey.

Charges Stem From A Child Sex Crimes Investigation

     The charges stem from an investigation that began in April 2025, when the Manville Police Department contacted members of the Somerset County Prosecutor’s Office Special Victims Unit regarding an allegation that an adult male showed a 12-year-old Manville, New Jersey girl sexually explicit photos on his cellular phone and then masturbated in front of her. 

     During the ensuing investigation and following interviewing witnesses, including the child victim, Detectives executed a court-authorized search warrant at Vielma-Hernandez’s Somerville residence. During the search, Detectives seized Vielma-Hernandez’s cellular phone. During a subsequent forensic examination of the device, Investigators uncovered sexually explicit images. At the conclusion of the investigation, Detectives of the Somerset County Prosecutor’s Office Special Victims Unit and the Manville Police Department found probable cause to believe that sex crimes had been committed against the victim, which led to the above charges being filed.

     The investigation remains active and ongoing. Anyone with additional information regarding this investigation is urged to contact the Somerset County Prosecutor’s Office Special Victims Unit at (908) 231-7100 or the Manville Police Department at (908) 725-1900. All calls and information will be kept confidential.

“The rules of the court require us to include a statement that states: The charges outlined in this publication are merely accusations, and the defendant and or defendants are presumed innocent unless and until proven guilty beyond reasonable doubt.”