Seoul warned the public on Saturday to avoid more balloons sent from North Korea and to report them to the military or police.
South Korea's military said North Korea was sending more balloons carrying "filth" across the heavily fortified border.
North Korea sent hundreds of balloons carrying trash and excrement earlier this week, calling them "gifts of sincerity" and vowing to send more. On Saturday, South Korean Defence Minister Shin Won-sik called this "unimaginably petty and low-grade behaviour".
A public message broadcasted by the city of Seoul asked the public to refrain from touching balloons "identified in the sky near Seoul" and report them as they were "being handled by the military".
Other regional governments had been asked to broadcast similar messages, the defence ministry said.
North Korea has said the balloons were retaliation for an ongoing propaganda campaign by North Korean defectors and activists in South Korea, who send balloons containing anti-Pyongyang leaflets, food, medicine, money and USB sticks loaded with K-pop music videos and dramas across the border.
At least six people were killed in central Vietnam when a bus carrying them was hit by a landslide on Sunday evening, state media reported on Monday, as heavy rain pounded the area.
Federal agents have arrested at least 81 people in Charlotte, North Carolina this weekend, a senior commander said on Sunday, marking a sharp escalation in the Trump administration’s mass deportation campaign.
India's federal anti-terror agency said on Sunday it had arrested a resident of Kashmir who it accused of conspiring with the driver of acar that exploded in Delhi last week, killing eight people and wounding at least 20 others.
Prime Minister Benjamin Netanyahu said on Sunday Israel remained opposed to a Palestinian state after protests by far-right coalition allies over a US-backed statement indicating support for a pathway to Palestinian independence.
Ukraine is working to resume the exchange of prisoners with Russia, hoping for the release of 1,200 Ukrainians, President Volodymyr Zelenskyy and his Security Council chief said.
His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai, has welcomed delegates of the Dubai Airshow returns, ahead of its biggest edition to date.
The 244th UAE aid convoy has entered the Gaza Strip under the "Olive Children" initiative, which is dedicated to supporting orphans and securing their basic needs as part of Operation Chivalrous Knight 3.
The UAE has strongly condemned the continuous violations committed by Israeli occupation forces and settlers against Palestinians in the occupied West Bank and the recurrent storming of Al Aqsa Mosque courtyards.