A former South Plainfield police captain who helped create a computer forensic laboratory to investigate crimes against children has been charged with the sexual exploitation of a minor. The U.S. Attorney for New Jersey says Michael Grennier is charged with one count of sexual exploitation of a child. Prosecutors say the alleged victim told police that the 50-year-old Grennier paid her for photographs and video of herself naked and encouraged her to perform sexually explicit acts on the internet. It is not immediately clear who is representing him. Prosecutors say he was detained following a Tuesday court appearance. The Star-Ledger reports (http://bit.ly/YzxkLJ ) Grennier was once named Officer of the Year and was considered a "computer guru" during his 25 years with the police department.