Last week, North Korea fired shells at a South Korean military base across the demilitarized zone in attempt to stop propaganda broadcasting from loudspeakers. Seoul responded with dozens of heavy artillery rounds.
"It the tensions ease, we may remove them," the source told RIA Novosti.
According to the source, the sides attempt to resolve the current situation, though this work has so far been unsuccessful.
He added that North Korea first has to acknowledge that it is behind the incident on August 4, when two South Korean soldiers were injured in a mine blast in the Korean Demilitarized Zone.
"Therefore we ask the DPRK to state that they will not carry out more such provocations. If they recognize this, our side is ready."
On Saturday, the conflicting neighboring countries began the first round of high-level talks to reduce escalated tensions.
South and North Korea are still formally at war, as no peace treaty was ever signed after the Korean War of 1950-1953.