Three brothers own certain land in a village and all three are no more. There are legal heirs totalling 11.
It is presumed all of them died intestate. You can sell or give power of attorney in favour of one of the family or outsiders after the land has come into the name of the legal heirs. To be on the safe side and to avoid future complications, it is better the land is partitioned through a registered partition deed and later each legal heir can decide what to do with the portion of land he/she got. All the legal heirs, based on the partition deed can give a Power of Attorney for the sale of the property to a reliable person.
It is better, you contact a local Lawyer with full details and be guided accordingly.