Can the Interpol freeze a bank account from the Cayman Islands?

I wouldn’t have thought so. Interpol is an organisation that facilitates worldwide police cooperation but doent have any actual power.

Interpol has nothing to do with banking !

“Red Notices are issued for fugitives wanted either for prosecution or to serve a sentence. A Red Notice is a request to law enforcement worldwide to locate and provisionally arrest a person pending extradition, surrender, or similar legal action.”

https://www.interpol.int/en/How-we-work/Notices/View-Red-Notices

This is not in the scope of Interpol.
The Bank institution holding the account is the one who actions the freeze. This is based on authorized legal requests.