Reported about 1 year ago
Kim Yo Jong, the sister of North Korean leader Kim Jong Un, disclosed that North Korea has been sending 7.5 tons of waste paper into South Korea recently as part of a 'garbage balloon' campaign in response to similar activities in South Korea. The North Korean representative stated that the waste paper contains no political content, but South Korea's response may lead to further retaliation. South Korea reported that North Korea also released over 300 waste balloons, including papers and plastics, which were found to be harmless.
Source: YAHOO