BY BRIAN MELLEY, Associated Press

LOS ANGELES — When the FBI arrested an Army veteran in a plot to bomb a white supremacist rally in Southern California, it was the work of a confidential informant that helped snare him.

Over the course of six weeks, the informant counseled, cautioned and coaxed Mark Domingo, steering him away from rash gun attacks, offering him opportunities to quit and eventually leading him to a trap, according to court documents.