The Central Bureau of Investigation (CBI) arrested two assistant accounts officers of the Central Board of Direct Taxes (CBDT), Pankaj Kumar and Aul Wani, in Panaji on Friday for allegedly demanding and accepting a bribe to clear pending bills of a contractor. The arrests were made following a written complaint filed by Kamlakant Chaturvedi, a contractor whose company provides manpower services to the Income Tax Department and other entities.