Koizumi says he meant no offence

Ninety-one members of parliament followed Mr Koizumi's example on Tuesday, and another 94 sent representatives in their place.

South Korean Foreign Minister Choi Sung-hong summoned the Japanese ambassador on Monday and expressed "strong regrets" over the incident, which came less than six weeks before the two countries co-host the World Cup.

Mr Koizumi's visit to the shrine last year, the first by a serving Japanese prime minister in 16 years, led to a barrage of protests.

That visit was particularly sensitive because it came shortly before the 15 August anniversary of Japan's surrender, which ended World War II.

Sensitive history

South Korea, China, and other Asian countries, which suffered under Japan's war-time rule, view the shrine visit as an attempt to glorify Japan's past.

China has already summoned the Japanese ambassador to Beijing to express its displeasure over the visit, according to the Xinhua news agency.

The Beijing foreign ministry expressed "strong dissatisfaction" with the action, saying that China "resolutely opposes" all such visits.

Liberals within Japan itself have also accused Mr Koizumi of trying to stir up nationalist sentiment.

Few Japanese prime ministers have visited the shrine, aware of the sensitivities involved.

Koizumi's defence

But Prime Minister Koizumi has defended his visit.

"The meaning of my visit is to express my hope that we will never have another war," he said.

"There is no change in the friendship and promotion of exchanges with China and South Korea. I think I can gain their understanding," Mr Koizumi told reporters at the weekend.

A similar visit last year sparked a furious reaction from China and the two Koreas, which suffered from Japanese aggression and imperialism in the first half of the 20th Century.

Relations with China and South Korea were damaged for several months afterwards.