A Warwick man is being held on charges related to the terrorist investigation in Boston.  Nicholas Rovinski was taken into custody last night for his role in what investigators say was a plot to behead a blogger and to kill police.  Law enforcement officials shot and killed Usaamah Rahim last week in Boston after he reportedly kept charging at them with a large knife.  Rahim and accused co-conspirator David Wright reportedly traveled to Rhode Island to discuss the terror plot, meeting on a beach near Rovinski's home.