The Chicago Police Department's interim superintendent is warning officers they face discipline if they don't make sure both the video and the audio of their squad car dashboard cameras are working. .

The department was harshly criticized when it reported that the audio was not functioning on the dashcam that recorded the October 2014 fatal shooting of Laquan McDonald by officer Jason Van Dyke. Days later, the city released four more dashcam videos from other squad cars at the scene — none of which included audio.

Escalante told the Chicago Tribune (http://trib.in/1NAsbLk ) that he's sent inspectors to do random checks of dashcams. He says that when they've found technical problems preventing them from working they are disciplining officers who did not report those problems to their supervisors.

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Information from: Chicago Tribune, http://www.chicagotribune.com