North Korea suffered significantly more casualties in an exchange of artillery fire when the North attacked the South Korean island of Yeonpyeong on Nov. 23, the Kyodo news agency reported.

"An anonymous source was told by a North Korean government official that the North suffered several times more casualties than South Korea, where four people were killed," it said.

But the North Korean official did not mention any civilian casualties.

Meanwhile, the National Intelligence Service here disclosed satellite images of areas near the North Korean artillery positions but said only it is analyzing how much damage the North suffered.

The North's official KCNA news agency in attempt to put the cart before the horse reported on Nov. 27, "The enemy's shells landed indiscriminately in areas near civilian homes located far away from the artillery positions."