Normal automorphisms of free Burnside groups

We prove that for an arbitrary odd n >= 1003 and m > 1 every automorphism of the free Burnside groupB(m, n) that stabilizes every maximal normal subgroup N (sic) B(m, n) of infinite index is an inner automorphism. For the same values of m and n, we establish that the subgroup of inner automorphisms of Aut(B(m, n)) is maximal among the subgroups in which the orders of the elements are bounded by n.