Schlage Camelot Smartlock unlocks itself

A little while ago i noticed my front door unlocked by itself .
Checked the logbook and found this . Does anyone know what the reason could for this happening ?

Do you have automations using the lock?

No automations that involve the lock

Are you using the Schlage Alexa skill in parallel? If so, Alexa Hunches may be triggering it. Look in your Alexa log to confirm.