Bangladesch sendet Indien formelle Note mit der Bitte um Auslieferung von Sheikh Hasina | Indien-Nachrichten – Times of India

India’s stand would be that Sheikh Hasina is still the PM of Bangladesh. She did not resign but was forced out in a coup. There is only a caretaker govt in Bangladesh with no PM and no elected representatives, so they do not have the authority to demand anything.
There is also a clause in the India-Bangladesh extradition treaty that people whose offenses are political in nature can be made exceptions to the treaty.