S. 158BA: Block assessment-Undisclosed income-Search under section 132 was conducted during pendency of assessment proceedings-Abatement under section 158BA(2), relief was denied as no material showed that the search concerned assessee in his individual status or revealed undisclosed income for the block period; consequently, writ challenging assessment and penalty proceedings was to be dismissed. [S. 132, 153A, Art. 226]