FBI wiretapped Trump campaign chief Paul Manafort - reports

Donald Trump's campaign chairman, Paul Manafort, was wiretapped by the FBI due to concerns about his links with Moscow, US media reports say.

The reported surveillance, granted under a court warrant, occurred both before and after the 2016 election.

Investigators wanted to know if he had sought Russian help with the campaign.

It is not known if the wiretap, which began in 2014, included conversations with President Trump. Mr Manafort is said to be facing an indictment.

The former political consultant, who had worked for Ukraine's former ruling party, was chairman of the Trump campaign from June to August 2016. He has not commented on the reports.

FBI special counsel Robert Mueller is leading an investigation into alleged attempts by Russia to influence the 2016 election.

However, the Foreign Intelligence Surveillance Act (FISA) warrants were granted before his investigation started, and were first authorised as part of an investigation into Washington consulting firms working for Ukraine, CNN reported.

After the 2014 warrant ended, it was renewed again until earlier this year, in order to allow the FBI to investigate ties between Trump campaign associates and suspected Russian operatives.