  In this paper, we analyze the holographic covariant entanglement entropy in
the double Wick rotated version of a rotating BTZ black hole (3 dimensional
Kerr-AdS solution), where the periodicity of Euclidean time and spatial
direction are changed. The dual field theory has negative energy in the
Lorentzian signature. The holographic entanglement entropy agrees with its CFT
counterpart, which is obtained by a conformal transformation of the correlation
functions of twisted operators.
