SEOUL, South Korea — South Korea resumed broadcasting anti-North Korean propaganda through loudspeakers in border areas Sunday in retaliation for the more than 1,000 trash- and manure-filled balloons the North had sent over the last couple of weeks.
Hours later, the powerful sister of North Korean leader Kim Jong Un warned that the South created a ''prelude to a very dangerous situation.'' She said South Korea would witness an unspecified ''new response'' from the North if it continued with the broadcasts and fails to stop civilian activists from flying anti-North Korean propaganda leaflets across the border.
''I sternly warn Seoul to immediately cease its dangerous activities that would further provoke a crisis of confrontation,'' Kim Yo Jong said in a statement published by North Korea's official Korean Central News Agency.
The resumed propaganda broadcasts could trigger retaliatory military steps as tensions between the rivals rise while negotiations over the North's nuclear ambitions remain stalemated.
South Korea's military also said it detected North Korea launching what appeared to be more trash-carrying balloons Sunday night. The military did not immediately confirm if any landed in the South.
Lee Sung Joon, spokesperson of South Korea's Joint Chiefs of Staff, said Kim's comments represented a heightened verbal threat from North Korea but he did not provide a specific assessment on the actions the North might take. Lee said the South was conducting broadcasts in sites where soldiers have sufficient protection and are equipped to swiftly hit back when attacked.
''(We) don't think that they could provoke us that easily,'' Lee said during a briefing Monday.
The Joint Chiefs of Staff didn't specify where on the border the broadcast took place Sunday afternoon or what was played. Anti-Pyongyang broadcasts, K-pop songs and international news were broadcast in the past.