Answer:
Type I subsequent event
Step-by-step explanation:
The reason is that there are two types of subsequent events which includes a recognizable event and a non-recognizable event. In the Recognizable event which is also known as type 1 subsequent events is the event that has occurred at the financial statement date and is concluded after the year end. So in this case, the event had occured at the financial statement date which the auditor and the company didn't knew about and has been concluded in the subsequent period.