National Tax Agency head Nobuhisa Sagawa on Friday stepped down to take responsibility for the lingering controversy concerning a state-owned land sale, Finance Minister Taro Aso said.The heavily discounted land deal in Osaka involving a school operator at the center of favoritism allegations against Prime Minister Shinzo Abe has drawn renewed attention following a report that relevant Finance Ministry documents were falsified.On Friday, the government also confirmed reports that a ministry official involved in the state land sale died recently of suicide."We accepted Mr. Sagawa's request t…READ FULL ARTICLE