Transcript for Prosecutors Seek Possible Evidence From Amazon Echo in Slaying
murder investigation in Arkansas with a technological twist. Police believe Amazon's spark speaker known as Alexa could be the key to unlocking exactly what happened on the night in question and ABC's Mara schiavocampo has all the details for us this morning. Hi, Mara. Reporter: Good morning. Investigators want to know if that device recorded any important evidence the night of a murder. It's a case that's raising a lot of questions about privacy rights when it comes to certain devices inside your home. One of this year's hottest holiday gifts now at the center of a murder case. Arkansas police asking Amazon to turn over data from its popular echo device better known as Alexa. From the moment you wake up -- Alexa, who is on the calendar today? Reporter: Until you go to bed. Lights off. Reporter: It delivers music, news, weather and in the case against James beatlates, it could have been a witness to murder. He is accused of killing his co-worker found dead in bates' hot tub. He pleaded not guilty. Alexa, add wrapping paper to the shopping list. Reporter: When owners talk to Alexa. I put it on your shopping list. Reporter: It records the conversation. The question is, was anything relevant to the case recorded that night? This case raising new legal questions about high-tech devices that are on 24/7. The prosecuting attorney says it is incumbent on law enforcement officers to examine this data to determine if it has any relevance to the crime but bates' attorney disagrees. Whatter they're try to do is rather novel but deep invasion of privacy. Reporter: Amazon says they will not release data without a valid legal demand and, quote, objects to overbroad or otherwise inappropriate demands, now as for that case the defendant is out on bail and the trial set to begin next year. Is Alexa always recording what is going on. A great question. Alexa is always listening. It is not always recording but records when you say the wake word which is Alexa. It stores it somewhere else. You have to go and delete that information. It's supposed to be helpful if you want to know when did I look up that recipe, you can go access that information. In this case, investigators think it could have some evidence. Listening or recording, important distinction, thanks. Dan, where are you? Over -- they sent me away.
This transcript has been automatically generated and may not be 100% accurate.