A locally 5-arc transitive graph related to PSU ₃ (8)

We construct a locally 5-arc transitive G-graph Δ, where G∈{PSU3(8)⋊C2,PSU3(8)⋊C6}. The corresponding vertex stabilizer amalgams are of local characteristic 3 but are not weak (B, N)-pairs. They are the first examples of this kind where there exists a vertex z such that the extension of Gz/Op(Gz[1]) over Op(Gz[1]) is non-split.