A user of Amazon’s Alexa voice assistant in Germany got access to thousands of recordings from another user in what Amazon called a “a human error.”

The customer had asked to listen back to recordings of his own activities made by Alexa but he was also able to access 1,700 audio files from a stranger when Amazon sent him a link, German trade publication c’t reported.

“This unfortunate case was the result of a human error and an isolated single case,” Amazon said on Thursday. “We resolved the issue with the two customers involved and took measures to further optimize our processes. As a precautionary measure we contacted the relevant authorities”, Amazon added.

The files were then deleted from the link provided by Amazon but he had already downloaded them on to his computer, added the report from c’t.