  Precise neutrino--nucleus interaction measurements in the sub-multi GeV
region are important to reduce the systematic uncertainty in future neutrino
oscillation experiments. Furthermore, the excess of ${\nu_e}$ interactions, as
a possible interpretation of the existence of a sterile neutrino has been
observed in such an energy region. The nuclear emulsion technique can measure
all the final state particles with low energy threshold for a variety of
targets (Fe, C, H${_2}$O, and so on). Its sub-$\mu$m position resolution allows
measurements of the ${\nu_e}$ cross-section with good electron/gamma separation
capability. We started a new experiment at J-PARC to study sub-multi GeV
neutrino interactions by introducing the nuclear emulsion technique. The J-PARC
T60 experiment has been implemented as a first step of such a project.
Systematic neutrino event analysis with full scanning data in the nuclear
emulsion detector was performed for the first time. The first neutrino event
detection and its analysis is described in this paper.
