Details of a murder case in Arkansas are raising privacy concerns for the estimated millions of Americans who received the Amazon Echo as a holiday gift. 

James Bates, 32, faces a charge of first-degree murder in the Nov. 2015 death of his co-worker, Victor Collins. Police in Bentonville said Collins was found strangled in Bates' hot tub.

But prosecutors think "Alexa" may have recorded what happened at the time of Collins' death and they have since taken possession of the device after obtaining a warrant.

Amazon turned over some information, but said last month that information stored on its cloud servers won't be released "without a valid and binding legal demand properly served on us."

Casey Stegall reported this afternoon that it's unclear whether authorities in Arkansas will actually take Amazon to court to access the cloud information. 

The devices record the users' voices even in "standby" mode, storing the information on the cloud in order to customize the experience.

Stegall said if you have an Echo device or a similar in-home digital assistant from Google or Samsung, you can go to the manufacturer's website to learn how to disable some of the potentially worrisome features.

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