Fairly clear that somebody up top wanted a high body count and got it. They also wanted Omar to escape and were assisting him, but for some reason that did not occur.
A;; that will accomplish is o get them some money. Get their lawyers a lot of money. Raise taxes locally It will no cost the police one cent out of their pocket or diminish their pensions one iota. It will not bring back any of their loved ones whose lives might have been saved.
They had no intention of allowing Omar to live and tell a story that would have contradicted the company line. They only to give him the opportunity to complete his task. Then, operation on the theory that dead men tell no tales, the loose ends would be neatly tied up. Omar is killed.