Susceptibility data of freshly precipitated nitroprussides TM[Fe(CN)5NO] n H2O (TM=Mn, Fe, Co, Ni, Cu) follow very well modified Curie-Weiss law down to T=5 K indicating paramagnetic state; nitroprusside (NP) containing Zn is diamagnetic with a sign of paramagnetic contribution. Deviation from Curie-Weiss law and magnetization measurements on MnNP, FeNP and CoNP below T=5 K can indicate ferrimagnetic ordering at low temperatures. A hysteresis behaviour in ZFC and FC magnetisation with the temperature of bifurcation Tb=6 K was found for CoNP and FeNP. Mössbauer spectra taken at room temperature (besides FeNP) consist of a single symmetric quadrupole-split doublet with parameters δ and ∆ typical for FeII ions in octahedral sites. A more complicated spectrum of FeNP is a consequence of different Fe environments.