It's a (possible) twist worthy of Shyamalan. An EMT who responded at the site of the fertilizer plant explosion in West, Texas last month was arrested on Friday -- on charges of possession of bomb parts. The arrest occurred just hours before authorities announced they had begun a criminal investigation into the explosion, although they declined to say whether the two events are related. The paramedic, Bryce Reed, is in federal custody for allegedly possessing parts of a pipe bomb, according to the U.S. attorney's office. Reed claims he helped evacuate people after the April 17 explosion.