"In the context of less availability of land for industries (heavy industries), the government's intention is to focus on development of medium and small scale industries and enterprises," Roy said at a seminar of a chamber of commerce here.
Few days ago Roy had reportedly quit as adviser to the state government's commerce, industries and IT department, over alleged difference with Banerjee over land and industrial policy of the state.
Roy's comment was interpreted in political circles as criticism of Banerjee's land policy, which advocated that the state government would have no role to play in acquisition of land for industries.
It had drawn sharp reaction from state Industries Minister Partha Chatterjee who said the problem was not land but lack of infrastructure.
Earlier, Roy had openly slammed the TMC's student wing for allegedly attacking teachers and principals of schools and colleges.