Undisclosed Bank Account of a Delhi Government Aided School Pricipal as single signotary

The account was opened ten years back and it has been used to collect crores of rupees, including cash deposits of several lakhs, in the previous ten years from various sources. The entire amount so collected is withdrawn in cash by HoS. This bank account was never disclosed in any financial statements. Similarly, this account has not been made available for any statutory, departmental, or government scrutiny, auditing, and checking during the past ten years. Initially, on an inquiry, the Principal even denied the existence of any such account. However, when it was substantiated with entire bank details, he agreed it is an account opened in his “fiduciary” capacity. Can such an account be opened and operated in the fiduciary capacity of HoS/Principal of a Government-aided school, collect crores of rupees from various sources and withdraw the entire money in cash without any statutory audit and checking for a period of ten years? Who is responsible to take appropriate action in the Directorate of Education, Delhi