  The Narrow Line Seyfert 1 galaxy Mrk 766 has been observed by BeppoSAX on May
1997. The source was fairly variable, both in flux and spectrum, during the
observation. The variability is the largest around 2 keV, possibly due to
variations in the warm absorber properties. An oxygen line is clearly detected,
at least in the first part of the observation. An edge around 7.5 keV, coupled
with the lack of any detectable iron line, suggests either reprocessing of the
primary X-rays by a mildly ionized disc or absorption by a further, thicker and
more ionized material.
