  We present a sample of 8 Seyfert 2 galaxies observed by HST, Chandra and
XMM-Newton. All of the sources present soft X-ray emission which is coincident
in extension and overall morphology with the [OIII] emission. The spectral
analysis reveals that the soft X-ray emission of all the objects is likely to
be dominated by a photoionized gas. We tested with the code CLOUDY a simple
scenario where the same gas photoionized by the nuclear continuum produces both
the soft X-ray and the [OIII] emission. Solutions satisfying the observed ratio
between the two components exist, and require the density to decrease with
radius roughly like $r^{-2}$, similarly to what often found for the Narrow Line
Region.
