It is that what they are saying makes very little sense.
The information from St. Louis County Police Chief is that an unarmed Michael Brown died 35 feet away from a police car, from being shot several times, due to an altercation inside that car.
And that to know anything further will take 6 weeks of toxicology.
edit - in answer to the further point below:
I see it as a problem when there are supposedly no facts in a case of someone being shot multiple times in broad daylight with several witnesses, followed up almost immediately by a large team of police who are fully able to cordon off and investigate the scene, who then claim that they cannot say anything because they want 6 weeks to do toxicology.
Toxicology.
For what, lead allergies?