Washington, Sep 24 (IANS): North Korea may well conduct a nuclear test during US Vice President Kamala Harris' upcoming trip to South Korea and Japan as Pyongyang has been preparing for such a test, a senior administration official said here.

The official warned the North will face serious consequences should it choose to conduct a new test, Yonhap News Agency reported on Saturday.

"It is possible and we previously said that the DPRK is preparing to conduct a nuclear test," the official said on Friday when asked about the possibility of a North Korean nuclear test during Harris' trip to next week.

DPRK stands for the Democratic People's Republic of Korea, North Korea's official name.

The official noted Pyongyang has been said to be preparing for a nuclear test for some time.

"We have made clear that such a test would result in additional actions by the US to demonstrate our ironclad commitment to the security of the Republic of Korea and to our Japanese allies," said the official, referring to South Korea by its official name.

"We have made clear how concerned we have been by North Korean provocations and destabilizing behaviour and a nuclear test would certainly be in that category," the official added, also noting the issue of North Korean provocations will "certainly" be discussed when the Vice President meets her South Korean counterparts.

Harris is scheduled to make a four-day visit to Japan from September 26, leading a presidential delegation to the funeral of late Prime Minister Shinzo Abe.

She will arrive in South Korea on September 29 for a meeting with South Korean President Yoon Suk-yeol, the official said in a telephonic press briefing.

It will mark her first trip to both Japan and South Korea since taking office early last year.

In addition to Yoon, Harris is also scheduled to meet with Prime Minister Han Duck-soo, who will be leading South Korea's presidential delegation to Abe's funeral.

The Harris-Han meeting will be held in Tokyo on September 26, according to the U.S. administration official.

During her two-day trip to Seoul, the Vice President will also hold a roundtable with a group of what the administration official called "groundbreaking Korean women".