South Korea's special prosecution office said on Tuesday it had not yet decided whether to seek arrest warrants for two Samsung Group [SAGR.UL] executives as part of a widening investigation into the political scandal threatening President Park Geun-hye. South Korea's Yonhap News Agency reported earlier on Tuesday, citing unnamed sources, that the prosecution would seek to arrest two Samsung executives. The two were questioned by investigators looking into whether the country's top conglomerate paid bribes to get the country's national pension fund to approve a controversial merger between two Samsung affiliates.