US President Donald Trump's administration has released a trove of records on the assassination of Martin Luther King Jr, including FBI surveillance files on the civil rights leader. A court-imposed order had kept the documents, totalling 230,000 pages, blocked from public view since 1977.

The release includes more than 230,000 pages of records detailing the FBI’s investigation into King’s assassination.

The Trump administration has released records of the FBI’s surveillance of Martin Luther King Jr., despite opposition from the slain Nobel laureate’s family and the civil rights group that he led until his 1968 assassination.