A police officer monitors a protest outside the SK Olympic Handball Gymnasium at Olympic Park in Seoul's Songpa District, Tuesday. Demonstrators have been staging a sit-in blockade of the Jamsil vote-counting center, demanding a by-election over a ballot shortage that occurred during the June 3 local elections. Yonhap

President Lee Jae Myung on Wednesday urged protesters gathered in southern Seoul in protest over ballot shortages in last week's local elections to refrain from using violence against police officers stationed on site.

"The insults and mockery directed by some protesters at police officers stationed at the protest site in Jamsil have crossed the line," Lee wrote on social platform X.

"(The protesters) have reportedly accused police officers at the scene of being 'fake police,' hurled verbal abuse at them, and even gone so far as to detain and assault them," he said.

Lee's remarks come as protesters continued to rally for the sixth day Wednesday near the SK Olympic Handball Gymnasium in Songpa Ward, protesting ballot shortages that occurred during the June 3 local elections.