U.S. President Donald Trump on Saturday urged Japan to further open its market to American exports as part of an effort to address the trade imbalance.

During talks with Prime Minister Shinzo Abe on the sidelines of the Group of 20 summit in Hamburg, Germany, Trump raised the issue of the U.S. trade deficit with Japan and the importance of ensuring "mutual market access" between the two countries, according to a senior Japanese official.

The official declined to provide details about Trump's remarks.