Boston Knifeman Spoke of Attacking 'Boys in Blue'

The FBI said Wednesday, A knife-wielding man killed by the terror investigators who had him under surveillance was confronted because he had bought knives and talked of an imminent attack on "boys in blue."
26-year-old, Usaama Rahim, plotted for at least a week to attack police, the FBI said in a complaint against a family member who was arrested Tuesday, the day Rahim was shot to death. On Wednesday, David Wright, who authorities say is Rahim's nephew, was ordered held on a charge of conspiracy with intent to obstruct a federal investigation.
The FBI said Rahim, who had previously discussed beheadings, bought three fighting knives and a sharpener on or before May 26 and he told 24-year-old Wright on Tuesday he would begin trying to randomly kill police officers.