TOKYONULL President Barack Obama has delayed his visit to Japan next week by one day, a Japanese foreign ministry official said Saturday, following a deadly shooting at a military base in Texas.

Japanese national broadcaster NHK and Jiji Press reported that Washington had asked Tokyo to change the schedule for the two-day visit to allow Obama to attend a memorial service for the 13 people killed in Thursday\'s shooting.

Obama had been due to arrive for his first trip to Japan on Thursday for talks with Prime Minister Yukio Hatoyama and to meet Emperor Akihito.The (US) government has requested a delay, a foreign ministry official said adding that the Japanese government had agreed to the request.

Obama would now be arriving on Friday and stay until Saturday, the official said. A meeting scheduled for Friday with Hatoyama would go ahead as planned, Kyodo News reported, quoting an unnamed foreign ministry source.

White House spokesman Robert Gibbs earlier told reporters in the United States that Obama would attend a memorial service for those killed when an army doctor went on the rampage at the Fort Hood base. When a service is scheduled the president will attend, he said, adding only that the timing of the memorial would be scheduled for the convenience of the families.

The visit by the US president to Japan is likely to be dominated by a row over an American military base on the southern island of Okinawa. Residents have long complained about the base and plans to relocate it to another part of the island, while Hatoyama government, which came to power in September, has promised to review the issue.

Hatoyama on Friday said he did not plan to make a decision on the base before
visit of president Obama. While the Japanese leader has promised to review a pact under which a new US base would be built on the island, Washington has insisted Tokyo stick to the agreement. The issue has clouded ties ahead of the visit.