Survivors and families of the victims of a deadly train crash in southern Mexico are demanding answers as the government vows to investigate what caused a train to derail on a rail line connecting the Pacific Ocean with the Gulf of Mexico.

Two trains on the Montclair-Boonton Line crashed West of Bay Street at 6:47 p.m., NJ Transit spokesperson John Chartier said.

According to Valley Metro, B line trains are unable to travel between the Central Avenue/Camelback Road and Thomas Road/Central Avenue stations due to the crash.

Officials said a train accident in southern Mexico killed at least 13 people and injured dozens, halting traffic along a rail line connecting the Pacific Ocean with the Gulf of Mexico.

It could take up to two years before federal investigators reveal why an NJ Transit slammed into the back of another train in Montclair Dec. 19 sending six crew members to hospitals.