  We present five newly found galaxy clusters at z>0.6 from the XMM Large-Scale
Structure Survey (XMM-LSS). All five objects are extended X-ray sources in the
XMM images. For three of them we have sufficient spectroscopically confirmed
member galaxies that an estimate of the velocity dispersion is possible: XLSSC
001 at z=0.613 and \sigma_V=867^{+80}_{-60} km/s, XLSSC 002 at z=0.772 and
\sigma_V=524^{+267}_{-116} km/s and XLSSC 003 at z=0.839 and
\sigma_V=780^{+137}_{-75} km/s. These three clusters have X-ray bolometric
luminosities L_X \sim 1-3 \times 10^{44} erg/s and temperatures 2-4 keV, and
consequently are less massive than previously known clusters at similar
redshifts, but nevertheless they follow the low redshift scaling relations
between L_X, T and \sigma_V, within the limits of the measurement errors. One
of the clusters, XLSSC 004, is detected independently as an overdensity of
galaxies of a colour R-z'=1.4 that matches the redshift of the central galaxy
z=0.87, although it cannot unambiguously be confirmed by the spectroscopic
observations alone. The highest redshift candidate cluster pertaining to this
paper, XLSSC 005, is most likely a double cluster complex at a redshift around
unity, associated with an extended X-ray source with probable substructure.
