Tax Implications on Sale of deceased owners proerty

There is a House that my Grandfather bought in 1998 on my grandmother's name. Now In March 2024 Grandfather sold it with a gain. But being it is on my grandmother's name and she is died at the time of sale. My father, Uncle and aunty signed on the sale deed. The entire sales consideration was received in my grand father's bank account. But the Income tax portal showing sale of land details in all person's profile who signed on sale deed. Now what would be the action to be done by each of the persons involved in this case?