1. The bank may refuse to accept the FDs in the name of the minor children, you have to provide a legal guardian to the children to take care of their funds during their minority.
You can obtain legal guardianship certificate from a court competent in this regard.
Under the circumstances, you can apply for child custody and legal guardianship for the minor children especially when their father is facing charges for the death of their mother who is reported to have died under mysterious circumstances and he has been held under suspicion.
2. Since you fear that the father of the children may deprive the children of their privileges and rights in the movable and immovable properties, you apply for legal guardianship for the children
How far the trust will be reliable shall depend on the trust being proposed to be formed
3. The FD amount deposited in the name of children can be reinvested again and again till the children become major by age.