How to locate the assets and bank accounts of a deceased

Dear Rajasree,

Hope you are doing well.

My brother who was working in Dubai for the last 20+ years expired due to Covid in Dubai.

He was unmarried and we are non-Muslims (Zoroastrians) residing in Pakistan. His body was also cremated in Dubai by the Government.

The HR department of the company he was working for has forwarded us his death certificate and is helping us with his insurance and official bank account but we have reasons to believe that he was maintaining another personal bank account which we are unaware of.

I shall be grateful if you can guide us through this process and how to locate his other accounts or any other investment he might have made in Dubai.

Thank you!