The Kremlin on Tuesday dismissed allegations that Russia was behind a hack of the Democratic National Committee's emails as absurd, mocking what it called obsessive references to Russia in the US presidential campaign.

"We are still seeing attempts to obsessively use the topic of Russia during the US electoral campaign. This absurd news was immediately refuted by the family of the well-known presidential candidate," Kremlin spokesman Dmitry Peskov told journalists, referring to Trump's eldest son, Donald Trump Jr.