Black Holes on Thin 3-branes of Codimension-2 and their Extension into   the Bulk
  We discuss black hole solutions in six-dimensional gravity with a Gauss-Bonnet term in the bulk and an induced gravity term on a thin 3-brane of codimension-2. We show that these black holes can be localized on the brane, and they can further be extended into the bulk by a warp function. These solutions have regular horizons and no other curvature singularities appear apart from the string-like ones. The projection of the Gauss-Bonnet term on the brane imposes a constraint relation which requires the presence of matter in the extra dimensions. 
Bertha Cuadros-Melgar, Eleftherios Papantonopoulos, Minas Tsoukalas   and Vassilios Zamarias