The Income Tax Department has attached ‘benami’ assets worth Rs 1,600 crore belonging to VK Sasikala, an aide to former Tamil Nadu Chief Minister J Jayalalithaa, officials said on Tuesday. Nine properties, located in Chennai, Puducherry and Coimbatore, were procured soon after demonetisation in November 2016 when Prime Minister Narendra Modi declared that the two high-value notes of Rs 500 and Rs 1,000 are not legal tenders, they said.