The US Federal Bureau of Investigation is looking into connections between Donald Trump’s son-in-law Jared Kushner and Russia, in a sign that the probe into contacts between Trump campaign aides and Russian officials has moved closer to the White House.

One person familiar with the mood inside the White House said there was “shock” that the FBI probe had reached Mr Kushner, the scion of a property empire who is married to Ivanka Trump, the president’s daughter. He is the only White House official known to be under FBI scrutiny amid an investigation that started last summer.

Mr Kushner has come under scrutiny because of two meetings in December. The first was with Sergei Kislyak, the Russian ambassador to Washington, while the other was with Sergei Gorkov, a Russian who heads Vnesheconombank, a state-owned lender under US sanctions.