A US Senate committee has said there is consensus that Russia interfered in the 2016 presidential election, but the issue of collusion between Donald Trump's campaign team and Moscow is "still open".

Republican Senator Richard Burr said on Wednesday that Facebook adverts bought by Russia-linked entities targeted more than just Michigan and Wisconsin - two states that had been named in media reports.

But content of the 3,000 Facebook adverts linked to Russia will not be publicly released.

The committee has interviewed more than 100 witnesses as part of its investigation, including "everybody who had a hand" in an assessment on Russian meddling in the elections.

US intel: Emails prove Russian interference

Senator Burr added: "I think there is general consensus among members and staff we trust the conclusions."


Dozens of intelligence and political officials have been interviewed since the investigation began in January.

Alongside several other congressional committees, it is also looking into any connections between Russian meddling and Mr Trump's campaign.

Among those who have been questioned are former campaign chairman Paul Manafort, as well as Mr Trump's son-in-law and adviser Jared Kushner.

Russia and Trump: America's 'collusion delusion'?

Last week, Mr Burr said there is no evidence of anything so far connecting Mr Trump's campaign and Russian interference.

Federal authorities notified 21 states last month that their election systems had been targeted by Russian government hackers during the 2016 election - a year after the efforts were first discovered.

Kushner: 'I did not collude with Russia'

Mr Burr said no vote counts had been altered.

Facebook has said the adverts focused on divisive social and political messages - including LGBT issues, immigration and gun rights, and were seen by an estimated 10 million people before and after the election.

It has accepted invitations to testify at hearings on Russian interference in front of House and Senate intelligence committees.

Twitter will also appear in front of the committees on Thursday. Google has also been asked to testify.