The crystal structure of the intermetallic PrFe2Al8 consists of a network of Al which forms quasi cage-like structure where the Pr and the Fe form chains of atoms along the c-axis. We propose neutron diffraction investigation of the nuclear and magnetic structures of PrFe2Al8 in order to understand the presence of ferromagnetic clusters of Fe, the metamagnetic transition in low fields and the antiferromagnetic order of Pr3+, which we have observed through macroscopic measurements. The structural peculiarities of the Al-network in PrFe2Al8 are understandably linked to its magnetism and hence, accurate estimates of bond distances and angles are essential to understand the formation of ferromagnetic clusters. The local symmetry of the Pr ion is an important parameter to be evaluated in order to estimate the crystal field levels using subsequent inelastic neutron experiments.