Vikash Dubey Encounter: Why did police stop the media car?

The gangstar of Kanpur, Vikash Dubey was killed in an encounter on Friday. But there are several questions arising about the encounter of Don. Why the police stopped the media car in Jhansi-Kanpur? Inspite of hearing the sound of gunfire why did not the locals got to hear the sound of the car accident? Though the police did not answer.