TOKYO (AP) _ North Korea accused the South Korean army Wednesday of shooting at a northern guard post in the Demilitarized Zone that divides the peninsula.

North Korea's official Radio Pyongyang, monitored in Tokyo, said soldiers at a South Korean guard post near Manwoori, armed with machine guns, fired more than 300 rounds at the guard post.

The incident occurred at 7:30 p.m. Tuesday near the mouth of Imjin River, the radio reported. It did not say whether anyone was injured.

In Seoul, a spokesman for the U.N. Command said shots were reported at about 7:40 p.m. Tuesday in the area described in the North Korean broadcast.

The spokesman, Billie Fullerton, said the command had sent an international investigative team to the area. He said no other details were available.

North Korea has reported five similar shooting incidents in the DMZ this month, two cases each on Aug. 5 and Aug. 8 and one on Aug. 9.

Fullerton said there was an exchange of fire Aug. 5 in which North Korean forces fired first, and that no firing had taken place in the area on Aug. 8 or Aug. 9.

North Korea sent a protest message over the alleged incident to the U.N. Command, Radio Pyongyang said.