President Lee Jae Myung enters a meeting of senior presidential aides at Cheong Wa Dae on Thursdasy. (Yonhap) President Lee Jae Myung on Sunday ordered the launch of a thorough joint investigation by prosecutors and police into ballot shortages that disrupted last week's local elections.A dozen locations in Seoul, including the eastern Songpa district, reported ballot shortages during Wednesday's elections, prompting the temporary suspension of voting at affected polling stations.Thousands of protesters continued rallying near a vote-counting facility in eastern Seoul for a third consecutive day, demanding a new election. (Yonhap)