An official with North Korea's Foreign Ministry says the launches of short-range ballistic missiles were probably part of regular military exercises. The official says they should not affect scheduled talks with Japan.
The official spoke to NHK on Sunday in Pyongyang.
North Korean media have not reported on the incident.
North Korean and Japanese government representatives have been planning to meet on Tuesday in Beijing. The ministry official said the talks will likely proceed as scheduled.
A group of Japanese civilians is now visiting North Korea to pay their respects to relatives who died around the end of World War Two. They are supposed to visit Wonsan, near the apparent missile launch site.
The North Korean official said the group's itinerary has not been changed.
Jun. 29, 2014 - Updated 03:15 UTC