Police are investigating an anonymous forum poster who praised Boston bombing suspects Tamerlan and Dzhokhar Tsarnaev and later made a threat against a Catholic high school in Fairfax, Virginia.
The online poster goes by the handle "Prophet Muhammad" and has made several disturbing statements on the Fairfax Underground website in the last month. On Friday, he posted a threat against Paul VI Catholic High School:
"Inshallah, Paul VI High School will be the scene of another massacre. Allahu akbar!"