I have a client whom was Deceased 12/13/2023, I did a tax return for him for 2023. His kids are now getting and IRS notice stating he should have done a 2024 tax return. Looking into this further the kids did not take his name off of the Wells Fargo Consolidated 1099 and they did receive a 1099 with interest income on this statement (with his name still on it). Of course this went to the IRS and they want a tax return done. How should I proceed???