By AP/St. Louis Public Radio
St. Louis – The National Transportation Safety Board has completed the on-scene portion of its investigation into last week's fatal school bus accident on Interstate 44.
Now, the agency will spend months analyzing the cause wreck that involved two school buses.
A spokesman says investigators will look at several things, including the training of the bus drivers, the buses' maintenance records, and how the construction zone was
laid out.
It could be more than a year before there's a final report.
The accident killed 15-year-old bus passenger Jessica Brinker Daniel Schatz, whose pickup truck was crushed.