The Tokyo Regional Taxation Bureau filed a criminal accusation Monday against the nationwide union of local government employees and former union executives for allegedly evading about 200 million yen in taxes, sources close to the tax authorities said.

The bureau filed the accusation with the Tokyo District Public Prosecutor's Office against Jichiro -- the All Japan Prefectural and Municipal Workers' Union -- its former chairman, Morishige Goto, 67, and several others, the sources said.

It was not immediately known how many former executives are involved in the criminal accusation.