Screech/static in audio of spotlight cam footage

Hi, From time to time I get this loud, screeching noise in my spotlight battery cam footage. RSSI signal is good and it only happens occassionally. I never hear any noise coming from the camera itself so this is apparently some artifact of the recording. I do note the delivery person has a cell phone in hand so maybe some interference there but I would hope these cameras are built to not pick up interference from cell phones carried by delivery persons or even a guest arriving. Any input appreciated. Warning, audio is pretty loud so turn down speakers.@Caitlyn_Ring maybe you can review?