It is reported by Yonhap with reference to the South Korean Foreign Ministry.
According to representatives of the two foreign ministries, these launches are "destabilizing provocations."
It is specified that Anthony Blinken and Pak Chin expressed concern about the activities of the DPRK, and also agreed to strengthen the partnership between the two countries.
Earlier, the DPRK launched three ballistic missiles towards the Sea of Japan.
Japan protested to the DPRK in connection with the launch of ballistic missiles.