“The Kingdom of Saudi Arabia sent a written warning about accused Boston Marathon bomber Tamerlan Tsarnaev to the U.S. Department of Homeland Security in 2012, long before pressure-cooker blasts killed three and injured hundreds, according to a senior Saudi government official with direct knowledge of the document.”

Source:Saudi official: Kingdom ‘warned the United States IN WRITING about Boston Bomber Tamerlan Tsarnaev in 2012 and rejected his application for an entry visa to visit Mecca in 2011’ | Mail Online