>>reporter: well, hildaldo lopez played a key part of this because on the night the students went missing almost a year ago, he was allegedly there and what is meant who have happened is that police abducted those students and then handed them over to a local gang and lopez was part of that gang and his accomplices, apparent accomplices now that night and his former boss now in prison testified that he directly gave the order to kill the students and burn their bodies in a municipal rubbish dump. that's the official story of what happened but just over a week ago, a group of very well respected independent experts released a report and one of their key findings was that they said it was scientific impossible for the students' remains to have been burnt almost to the state where they were unidentifiable in that dump. the temperatures would just not have reached that high so now lopez who apparently ordered that to have been done is now in custody and will have to give his testimony and will be questioned. it will be interesting to see what he has to say and maybe if it throws light on what