South Korea plans to send 600,000 coronavirus testing kits to the United States on Tuesday in the first such shipment following a request from U.S. President Donald Trump, a Seoul official told Reuters on Monday.

Trump made the request for testing kits in a telephone call on March 25 with President Moon Jae-in, as the United States was grappling with fast-growing outbreaks in many states.

A U.S. Federal Emergency Management Agency cargo plane carrying the equipment is scheduled to leave at 10:30 p.m. Tuesday, the official said on condition of anonymity due to the diplomatic sensitivity of the issue.