Authorities in North Korea are preparing to test an intercontinental ballistic missile within the next 48 to 96 hours.

This will be exactly when US President Joe Biden has to travel to Asia.

This was announced by CNN, citing its sources.

North Korea has conducted a series of ballistic missile tests this year, and US military and intelligence agencies estimate that Pyongyang may also be preparing for its first underground nuclear test in nearly five years.

After announcing these findings publicly in March, the Pentagon increased surveillance in the Yellow Sea, as well as increased the readiness of US missile defenses in the region.

The satellite-launched launch site is located near Pyongyang.

Biden leaves for South Korea on Thursday to meet with South Korean President Yun Suk Yel before leaving for Japan on Sunday, where he will meet with the leaders of Japan, Australia and India.

CNN reported earlier this month that US military and intelligence agencies estimate that North Korea may be ready to resume underground nuclear tests.

North Korea fired three ballistic missiles

This assessment concludes that Kim Jong Un's government is preparing at the Pungeri nuclear test site and may be ready to conduct a test by the end of the month.

Signs of staff and vehicle activity at the site have been spotted via satellite imagery, but officials do not know if the regime has placed nuclear material in one of the underground tunnels at the test site, which the United States is closely monitoring.

If North Korea conducts a test, it will be the country's seventh underground nuclear test and the first since 2017.

Biden's trip to the region this week is just the latest when the US president has traveled to Asia amid the threat of a nuclear test: Pyongyang was preparing for a test in 2014, when then-President Barack Obama traveled to South Korea and the country held test soon after Obama and other leaders left Asia in 2016.

Missile tests