The Anti-Corruption Bureau (ACB) of Telangana on Friday said it has seized properties worth about Rs six crore in a disproportionate assets (DA) case during searches carried out at the house of an official working in the Municipal Corporation Office in Nizamabad district and other places. The case was registered against a Superintendent in-charge Revenue Officer after he allegedly acquired assets disproportionate to his known sources of income by indulging in corrupt practices and dubious means of earning income during his service, an ACB release said.