Secretary of State Antony Blinken answers media questions after a family photo with the delegation at the end the first day of the U.S.-EU Trade and Technology Council (TTC) meeting at the Hazelwood Green Mill 19 building in Pittsburgh, Sept. 29. AP-Yonhap

U.S. Secretary of State Antony Blinken on Thursday expressed concerns over North Korea's recent missile launches, saying the country is increasing insecurity and instability in the region.

It marks the first time the top U.S. diplomat commented directly on North Korea's recent missile launches.

"We're concerned about these repeated violations of Security Council resolutions that create, I think, greater prospects for instability and insecurity," Blinken told reporters after attending U.S.-EU trade talks in Pittsburgh, according to the State Department.

North Korea test fired what it claims to be a "hypersonic" glide vehicle on Tuesday, about two weeks after it test launched a short-range ballistic missile.