Boston Knifeman Talked of Attacking 'Boys in Blue'

The FBI said Wednesday that a knife-wielding man who was 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." Usaama Rahim plotted for at least a week to attack police, according to an FBI complaint against a family member who was arrested Tuesday-- the day Rahim was shot to death. On Wednesday, the relative, David Wright, was ordered to be held on a charge of conspiracy with intent to obstruct a federal investigation.