China on Saturday released the last of four Japanese men held in the north of the country for allegedly filming a military site. According to the official Xinhua news agency, the State Security Bureau has released Sadamu Takahashi on bail after ordering him to write a statement of repentance. The other three men were released on September 30 after admitting to violating Chinese law. The four men were detained last month in the northern province of Hebei amid a bitter diplomatic standoff between China and Japan, sparked by Tokyo's arrest of a Chinese trawler captain in contested waters in the East China Sea.