Ambassador Kenji Hiramatsu, however, also said Japan is keen to have partnership with countries on shared values.
"The matter on the quadrilateral dialogue is still under discussion. And, at this time frame, nothing concrete has emerged," he told PTI on the sidelines of an event at the Japanese Embassy here last evening.
Japan's Foreign Minister Taro Kono last month had said that Tokyo favours a dialogue between Japan, the US, India and Australia to further boost strategic partnership among the four countries.
"We are not rigid in this regard," External Affairs Ministry Spokesperson Raveesh Kumar had said when asked about the Japanese foreign minister's remarks.
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