Law enforcement authorities Wednesday posted a cash reward offer in a city homicide case.

    Essex County Sheriff Armando Fontoura said the Crimestoppers program will pay up to $5,000 for details that lead to an arrest for the murder of Ibn Williams, then age 20, who was shot to death in the area of 89 – 91 Plymouth St. on Aug. 12, 2011.

    Anyone with information about the crime is urged to contact the Essex County Prosecutor’s Homicide/Major Crimes Task Force at 973-621-4586 or the Prosecutor’s TIPS Line at 1-800-847-7432.

    All calls to law enforcement will be kept confidential.