The Congress on Wednesday asked the Central government as to why Japanese Prime Minister Shinzo Abe was hosted in election-bound state of Gujarat.
Congress spokesperson Manish Tewari said it was "quixotic" that Abe was not being hosted in Delhi.
"We do not want to transgress propriety by commenting on a state visit but it is rather quixotic that the Prime Minister of a country as important as Japan, who is almost India's strategic partner in many respects, is strangely not even being hosted in Delhi," he said.
He hoped a state visit was not being used for "political purposes" in view of the elections in Gujarat, slated to be held later this year.
"With an election in Gujarat around the corner, it does raise a question -- and I hope this is not the case that a state visit is actually being used for political purposes because the manner in which it is structured is rather awkward," he told reporters.
Tewari said India had a great relationship with Japan and that relationship, its foundations and consolidation had been laid during the UPA regime.
Tewari also criticised the government over the handling of the Rohingyas issue and said the criticism India had been subjected to by the United Nations Human Rights Council was "absolutely unprecedented".
"The stand which this government has taken on the Rohingyas is totally contrary to India's traditions where we have welcomed the persecuted from any part of our neighbourhood," he said.
He said India had not faced "this kind of ignominy".
"So, therefore, you can be critical of (Congress vice president) Rahul Gandhi, but I think the time has come for the NDA-BJP Government and the Prime Minister to introspect that mere speeches and road shows with leaders of other countries do not substitute for diplomacy," Tewari said.
On Gandhi's recent remarks in the US about being ready to take over as the party chief, he said the Congress was a democratic party and an organisational election process was on.