457B Distribution Taxable Mississippi?

[Nature_Lover]

In Mississippi retirement distributions are generally nontaxable (SS, IRA, pensions)

457B distributions are deferred income from wages and are taxable by the feds. 

I cannot find a definitive statement that my 457B distributions past age 65 are or are not taxable in MS. Somehow I got the impression that they are taxable by TT but an accountant says they are not. The Lincoln W2 I receive assigns them to state wages (and federal of course) and applies the withholding to MS and the feds as well, for what that is worth. 

[Critter-3]

If the distribution is on a W-2 form then it is taxable which is why they withheld fed/state taxes.  Ask the issuer why the distribution is not on a 1099-R.