  We present the discovery of a previously unknown very nearby star - LHS 2090
at a distance of only d=6 pc. In order to find nearby (i.e. d < 25 pc) red
dwarfs, we re-identified high proper motion stars ($\mu >$ 0.18 arcsec/yr) from
the NLTT catalogue (Luyten \cite{luyten7980}) in optical Digitized Sky Survey
data for two different epochs and in the 2MASS data base. Only proper motion
stars with large $R-K_s$ colour index and with relatively bright infrared
magnitudes ($K_s<10$) were selected for follow-up spectroscopy. The
low-resolution spectrum of LHS 2090 and its large proper motion (0.79
arcsec/yr) classify this star as an M6.5 dwarf. The resulting spectroscopic
distance estimate from comparing the infrared $JHK_s$ magnitudes of LHS 2090
with absolute magnitudes of M6.5 dwarfs is $6.0\pm1.1$ pc assuming an
uncertainty in absolute magnitude of $\pm$0.4 mag.
