- U.S. President Barack Obama was tipped off before David Miranda was taken into custody by officials as he passed through Heathrow
- The White House say they didn't request the 'heads up'
- Editor claims British agents entered newspaper's London office
- Scotland Yard said detention was 'legally and procedurally sound'
- The 28-year-old was held while on way home to Rio de Janeiro from Berlin
- He was allegedly carrying USB drives of encrypted documents from whistleblower Edward Snowden
- London agents took his drives, a computer - and even a video game

[link to www.dailymail.co.uk]