RIYADH, May 21 (Reuters) - The White House said on Sunday it was aware North Korea had launched a medium range ballistic missile (MRBM) and noted its range was shorter than recent tests.

"We are aware that North Korea launched an MRBM. This system, last tested in February, has a shorter range than the missiles launched in North Korea's three most recent tests," a White House official said.

U.S. President Donald Trump is traveling in Saudi Arabia. (Reporting by Jeff Mason and Steve Holland; Editing by Mark Potter)