Claiming bank account and fixed depostis of deceased person in bank of other state

Hello, My family is located at Hyderabad and my mother had an account in Delhi. She expired in 2016 and there was no nominee in the account. The amount is around 1 lakh. We approached the bank of India (where my mother had the account) and they said to get a legal heir certificate, one indemnity bond and two sureties. We got the legal heir certificate, death certificate and will manage sureties. My questions are: 1. Are all of these really required for claiming 1 lakh. 2. Can the sureties be of Hyderabad address. I mean can we show residents of Hyderabad as sureties 3. Will the legal heir certificate and indemnity bond from hyderabad work in delhi as well. Im asking this since my sister won't be going with us to delhi and we will be taking her signature on the indemity bond and other documents. Any help would be appreciated.