Police have also released an image of someone they want to speak to as their enquiries continue.
Guernsey Police believe the incident took place at around 00:08 on Sunday morning (17th November).
The fish and chip shop had only reopened three days before that, after being closed for a few months while the new owners settled in.
You can read more here.
Pictured: Crimestoppers poster seeking information from the public on the incident.
Islanders are encouraged to get in touch with Crimestoppers anonymously, on 0800 555 111, or Guernsey Police on 01481 222222.
