Japanese administrative reform minister Tomomi Inada visited the war-related Yasukuni Shrine in Tokyo on Monday.
Inada apparently made the visit to coincide with the anniversary of the San Francisco Peace Treaty, which took effect on April 28, 1952, and restored Japan's sovereignty.
The Shinto shrine, which honors convicted Japanese war criminals along with millions of war dead, is seen as a symbol of Japan's past militarism by some countries, especially China and South Korea.
Among other members of the Cabinet of Prime Minister Shinzo Abe, Internal Affairs and Communications Minister Yoshitaka Shindo visited the shrine on April 12 and 22, while Keiji Furuya, state minister in charge of the issue of North Korea's abductions of Japanese nationals, visited on April 20.
Abe himself dedicated a "masakaki" tree offering to the shrine on April 21, the first day of the shrine's three-day spring festival, in a move regarded as an alternative to visiting the shrine in person.