Pyongyang, Aug 31 (Xinhua) US and South Korean spy planes conducted over 170 reconnaissance missions over North Korea in August, the official media reported Monday citing a military source.

Some 90 flights were conducted by the US, which used the RC-135, U-2 and E-3 reconnaissance aircraft over waters near the northeastern part of South Korea, while South Korea was responsible for at least 80 flights, the Korean Central News Agency said.

Last month, more than 180 reconnaissance missions were conducted over North Korea, the report said.