A long-discussed summit between North Korean leader Kim Jong Un and U.S. President Donald Trump has been tentatively scheduled to take place on June 12 in Singapore at 9 am, the White House said on Monday.

White House spokesperson Sarah Sanders made the announcement during a regular press briefing, adding that significant progress had been made in discussions between U.S. representative and their North Korean counterparts.

“We are actively preparing for the June 12 summit between the President and the North Korean leader. The advanced team in Singapore is finalizing logistical preparations and will remain in place until the summit