Poorly maintained tracks and overworked engineers contributed to a collision between two commuter trains in Brazil last week, according to the president of Rio de Janeiro's train workers union.
The accident killed 8 and injured 101 people when a train carrying hundreds of commuters collided with an empty train on the outskirts of Rio de Janeiro.
Valmir de Lemos said bad signaling and aging trains were also to blame for Thursday's crash, according to Reuters.
Lemos said he has proof that the company running the trains, Supervia, used fewer screws than necessary to secure the tracks. The company have reportedly denied the accusation.
A technical commission looking into the crash is due to file a report on its findings in ten days.
Reported by staff writer
