1.   But the South Korean defence ministry quoted the sole prisoner taken alive as saying the sub was on an infiltration mission to drop off and pick up reconnaissance agents.

2.   But the South Korean defense ministry said the sub had been on an infiltration mission to drop off and pick up reconnaissance agents.

3.   But the South refused, saying the sub had been on an infiltration mission to drop off and pick up reconnaissance agents.

4.   The sole prisoner said the sub was on an infiltration mission to drop off and pick up reconnaissance agents.

5.   The South Korean defence ministry has quoted the sole prisoner taken alive as saying the sub was on an infiltration mission to drop off and pick up reconnaissance agents.