US authorities added the name of the Boston bombing suspect Tamerlan Tsarnaev to a terrorist database 18 months before the explosions, but did not follow up their inquiry.
Officials say the CIA made the request to add Tamerlan's name after the Russian government contacted them with concerns he had become a follower of radical Islam.
More top news
A Bank Holiday washout has left many Britons running for cover, with a fortnight's worth of rain expected on Monday.
Gary Barlow has given another bride a wedding day to remember after serenading her on the big day.
Today marks the end of summer and for many it was a disappointing wet start to the day.