William Alvarenga.jpg

William Alvarenga of Bound Brook.

(Somerset County Prosecutor's Office)

BOUND BROOK — A 19-year-old Bound Brook man has been charged with sexually assaulting a 6-year-old girl who knew him, the prosecutor says.

William Alvarenga, 19, of Bound Brook, was arrested and charged with sexual assault, according to a statement from Somerset County Prosecutor Geoffrey D. Soriano, Somerset County Prosecutor’s Office Chief of Detectives Tim Fitzgerald and Bound Brook Borough Chief of Police Michael Jannone.

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On Oct. 21, a s6-year-old girl told detectives from the Somerset County Prosecutor's Office Sexual Assault/Child Abuse Unit and the Bound Brook Police Department that Alvarenga sexually assaulted her in the borough between May and October of this year, the statement said.

On Oct. 24, Alvarenga was arrested without incident at the Bound Brook Police Headquarters, then was lodged in Somerset County Jail with $100,000 cash only bail set by Judge Robert Reed of state Superior Court in Somerville.