The hashtag #TortureReport trended to number one worldwide on Tuesday after the US Senate released a document detailing CIA interrogation techniques used on terrorism suspects between 2001 and 2009.

The 480-page report follows a five-year investigation by the Senate Intelligence Committee. Committee chair Dianne Feinstein said after its release that the CIA's techniques were "far more brutal than people were led to believe."

On Twitter, users around the world reacted to report using hashtags #TortureReport and #CIAreport