(CNN)Moments before two trains collided head-on, killing 12 people, a dispatcher was playinga game on his phone, authorities said.
The dispatcher was arrested on suspicion of manslaughter and gross negligence Tuesday. German police said their investigation showed he had "violated operational rules" by playing the game until shortly before the collision on February 9.
(CNN)Moments before two trains collided head-on, killing 12 people, a dispatcher was playing a game on his phone, authorities said.