S. 158BC : Block assessment – Search- Addition was made on the basis of seized material – Block assessment cannot be held to be invalid on the ground that the authorisation was not in the name of the assessee but the premises of the assesee – Neither AO nor Tribunal in appeal could examine warrant of authorization for purpose of examining whether there existed reasons to believe on material before competent authority to order search u/s 132(1) . Assessee has not disputed the panchanama prepared by the search team in the name of assessee- Block assessment is held to be valid . In the present case search and seizure was actually made on the premises on the premises of assessee and documents and material collected therefrom also pertain to it , therefore S.158BD is not attracted . [ S.132, 158BD ]