Such horrible news. It's hard not to want to judge in such circumstances, but I know our Lord wants us to pray not only for the fallen victims and those who love them and are so ripped by this tragedy, but also for the perpetrator, and their miserable soul for the torture that lives within them that would lead them to such carnage.
Lord, bless these souls and keep them, their family and friends close to you. Be with law enforcement and prosecutors such that they find the true culprit and move in all to change their hearts and turn to You, Lord for insight, peace and healing.