North Korea has dropped at least 260 balloons carrying "filthy waste and trash" in South Korea, according to officials.
South Korea’s military warned its residents to stay indoors and cautioned the public against touching the white balloons and the plastic bags attached to them.
The recent incident comes days after North Korea said it would retaliate against the "frequent scattering of leaflets and other rubbish" in border areas by activists in the South.
Southern activists are believed to have launched balloons carrying among other things, cash, banned media content, and even Choco Pies – a South Korean snack banned in the North.
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