sentences:  Although the FBI investigation was able to quickly connect Ghantt to Campbell, connecting Ghantt to Chambers was a more difficult task.Tips had led the FBI to begin monitoring Chambers' (and his wife's) activities, but it was not until the FBI recorded a phone call from Ghantt in Mexico that the final connection was made.By then, the FBI had become greatly concerned for Ghantt's personal safety; they had learned that Chambers had plotted to have Ghantt killed in a murder for hire scheme using a "hit man" named Michael McKinney.