A candidate for chiral bands was found in for the first time in a mass region of oblate (or nonaxial with ) deformed nuclei. Two bands show very similar quasiparticle alignments, moments of inertia, and ratios. They have a relative excitation energy of about 500 keV and different patterns of energy staggering. Calculations using the two-quasiparticle-plus-triaxial-rotor model with residual proton-neutron interaction included show that a triaxial deformation with agrees very well with all the experimental observations. Furthermore, considerable energy staggering for both partner bands was calculated for this configuration at , suggesting that chiral bands may have substantial energy staggering.