  We report the discovery of a galaxy at a redshift z = 6.17 identified from
deep narrow band imaging and spectroscopic follow-up in one of the CFHT-VIRMOS
deep survey fields at 0226-04. In addition to the existing deep BVRI images of
this field, we obtained a very deep narrow band image at 920 nm with the aim of
detecting Lyalpha emission at redshift ~ 6.5. Spectroscopic follow-up of some
of the candidates selected on the basis of their excess flux in the NB920
filter was performed at the VLT-UT4 with the FORS2 instrument. For one object a
strong and asymmetric emission line associated with a strong break in continuum
emission is identified as Lyalpha at z = 6.17. This galaxy was selected from
its continuum emission in the 920 nm filter rather than for its Lyalpha
emission, in effect performing a Lyman Break detection at z = 6.17. We estimate
a star formation rate of several tens of M/yr for this object, with a velocity
dispersion 400 km/s. The spectroscopic follow-up of other high $z$ galaxy
candidates is on-going.
