  Powerful radio-AGN are hosted by massive elliptical galaxies which are
usually very poor in molecular gas. Nevertheless the central Black Hole (BH)
needs molecular gas for the nuclear activity. Thus it is important to study the
origin, the distribution and the kinematics of the molecular gas in such
objects. We have performed at the IRAM-30m telescope a survey of the CO(1-0)
and CO(2-1) emission in the most powerful radio galaxies of the Local Universe,
selected only on the basis of their radio continuum fluxes. The main result of
that survey is the low content in molecular gas of such galaxies compared to
Seyfert galaxies. The median value of the molecular gas mass is 4x10^8 Msun.
Moreover, the CO spectra indicate the presence of a central molecular gas disk
in some of these radio galaxies. We complemented this survey with photometric
data of SPITZER and IRAS fluxes with the purpose to study the dust and its
relation with the molecular gas and AGN.
