The balloons, which were found across South Korea, carried toilet paper, batteries and suspected poo.

North Korea has dropped at least 260 balloons carrying rubbish in the South, prompting authorities to warn its residents to stay indoors.

South Korea’s military also cautioned the public against touching the white balloons and the plastic bags attached to them because they contain “filthy waste and trash”.

The balloons have been found in eight of nine provinces in South Korea and are now being analysed.