U.S. Deputy Secretary of State Wendy Sherman will travel to Tokyo next week for a trilateral meeting with her Japanese and South Korean counterparts, the U.S. State Department said Wednesday, as North Korea continues its missile tests at an unprecedented rate.

It will be the fourth trip to the Indo-Pacific region by the No. 2 official in the department since May. It said her trip demonstrates the United States' continued commitment to the region and its closest allies in Asia — Japan and South Korea.

In Tokyo, Sherman will meet with Foreign Minister Yoshimasa Hayashi and national security adviser Takeo Akiba, among other officials.

On Oct. 26, she will take part in a meeting with Japanese Vice Foreign Minister Takeo Mori and South Korean First Vice Foreign Minister Cho Hyun-dong, according to the Japanese Foreign Ministry. She will also hold bilateral meetings with the two officials.

The United States, Japan and South Korea have been expressing serious concerns over Pyongyang's provocative behavior, with North Korea carrying out 27 rounds of missile tests, including cruise missiles, since the start of this year.

They have also denounced Pyongyang's firing of a ballistic missile earlier this month over the Japanese archipelago for the first time in five years, while emphasizing the importance of their trilateral coordination in holding North Korea "accountable," according to the State Department.

North Korean ballistic missile launches in defiance of U.N. Security Council resolutions have come amid growing speculation that the country could conduct a seventh nuclear test in the near future.

While in Tokyo, Sherman will also discuss women's empowerment with a group of Japanese and South Korean university students. She will also participate in a discussion on marriage equality with Japanese LGBTQ community leaders, according to the U.S. State Department.