The Kim Jong un regime may be preparing to test another missile in North Korea to coincide with President Donald Trump’s first major trip to Asia, Reuters reports.

The information was briefed to South Korean officials by the South Korean intelligence organization, and their assessment was based on “the active movement of vehicles around the missile research institute in Pyongyang. The North will constantly push for further nuclear tests going forward, and the miniaturization and diversification of warheads.”

The North has had a flurry of missile and nuclear tests this year, which may have resulted in damage to the testing sites. Earlier this week, it was reported that a tunnel associated with one nuclear test site may have collapsed, killing up to 200 people. North Korea’s largest nuclear test to date occurred there on September 3rd.

North Korea appears to value timing provocative acts on significant dates or holidays to pack an additional punch. This year on July 4th, Independence Day in the United States, they had their first successful test of an Intercontinental Ballistic Missile (ICBM).