Note : At least 315 people were injured in the train collision , the media reports . NEW : Passenger : ` ` The only thing you heard here were screams '' NEW : Argentine president : ` ` I feel pain and fear '' footage shows doctors rushing to the scene and attending to the wounded .
NEW : At least 315 people were injured in the train collision , state media reports . NEW : Passenger : `` The only thing you could here were screams '' NEW : Argentine president : `` I feel anger and impotence '' Video shows rescuers rushing to the scene and tending to the wounded .