  In this paper, we report our first attempt at determining NN potentials in
the parity odd sector including the spin-orbit force in lattice QCD, employing
the method to extract successfully parity even NN potentials from
Nambu-Bethe-Salpeter (NBS) wave functions through the Schr\"odinger equation.
Using Nf = 2 CP-PACS gauge configurations on a 16^3 x 32 lattice at a = 0.16 fm
and m_\pi \cong 1.1 GeV, we calculate central, tensor and spin-orbit potentials
in the parity odd sector. Although statistical errors are still large, we
observe that the qualitative features of these potentials roughly agree with
those of phenomenological potentials.
