Japan train crash totals: 78 people died, 440 people were injured

Investigators looking into the most deadly train accident in Japan in 40 years say they were treating the crash as "possible &to=http:// english.pravda.ru/main/2001/09/17/15376.html ' target=_blank>criminal negligence."

The investigators said Tuesday they had searched several railway offices, seized documents and questioned a conductor who was supervising the inexperienced train driver, who has still not been found.

At least 78 people are known to have died, another 440 people were injured, according to Japanese police.

A day after the deadly crash, rescuers pulled three more survivors out of the crumpled wreckage but said they did not expect to find anyone else alive. Japanese police searched several offices of Japan Rail West, taking away records. Investigators are focusing on the speed of the train and the inexperienced young driver at its helm, a new employee who was 23 years old and had 11 months of experience, informs CNN News.