The Christie administration has brought in a private attorney from one of New Jersey’s most prominent law firms to take over the defense of a two-year-old whistleblower suit that accuses it of taking over a county prosecution and having the charges dropped in order to protect political cronies.

Peter Torcicollo of Gibbons substituted into Barlyn v. Dow on Tuesday, replacing Deputy Attorney General Jane Greenfogel and other government lawyers who have been representing the state and other defendants since the case was filed in 2012.