We report on a search for the first generation heavy neutrino that is 
an isosinglet under the standard $SU(2)_L$ gauge group. The data collected 
with the L3 detector at center-of-mass energies between 
130 GeV and 208 GeV are used. The decay channel 
$\mathrm{N_e} \rightarrow \mathrm{e} \mathrm{W}$ is investigated
and no evidence is found for a heavy neutrino, $\mathrm{N_e}$,
in a mass range between 80 GeV and 205 GeV. Upper limits on the mixing 
parameter between the heavy and light neutrino are derived.