India's foreign ministry has said it is "not aware" of a phone call in which US President Donald Trump claimed Indian Prime Minister Narendra Modi agreed to stop purchasing Russian oil, BBC reported.

On Wednesday, Trump said his Indian counterpart had "assured me today" that it would end Russian oil imports, a move the US has pushed for in a bid to increase economic pressure on the Kremlin to end the war in Ukraine.

But asked about the call on Thursday, an Indian government spokesman cast doubt on Trump's account, saying he was "not aware of any conversation between the two leaders" taking place the previous day, according to BBC.