South Korean activists floated anti-Pyongyang leaflets across the border with North Korea on Monday, a week after the North threatened military action over a similar propaganda exercise.
Around a dozen activists released seven balloons carrying 50,000 leaflets from a park in the border town of Paju, north of Seoul, amid heavy security involving some 100 police officers.
There were minor scuffles with local residents who sought to block the balloon launch for fear of North Korean reprisals.
A week ago, South Korean police had cordoned off the same area around Paju to prevent a group of North Korean defectors from launching leaflets across the border.
The police response followed a warning from the North Korean military that it would direct a "merciless military strike" on the area if the event went ahead.
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