>> reporter: both jennifer and james crumbly have pleaded not guilty to the charges, and their attorney took issue with the time line of events laid out during their arraignment. >> the facts that have been presented by ms. mcdonald, her office, have been cherry-picked to further her narrative to make an example of mr. and mrs. crumbly. >> none of this should happen. a 15-year-old should not be sitting in jail facing life in prison, and it could have been prevented. >> reporter: the prosecutor is still investigating the school's role in the events leading up to the shooting. >> i think it's time we stop talking about how terrible it is we have school shootings and look to see what we can do to actually prevent them from happening again. >> reporter: the michigan attorney general has also criticized the oxford school district's hiring of a third-party to investigate the shootings and offered to help conduct a review of the events that day. meanwhile, a community is still grieving the death of four teenagers and rallying around those injured in the shootings. and today the 16-year-old who