Did Saudi Arabia warn US of Tamerlan Tsarnaev terrorist risk? And the denied him a visa to attend haj in Mecca?

Drudge Report says UK Daily Mail is about to report this...

Update: 
Here is the article in the UK Daily Mail:

EXCLUSIVE: Saudi Arabia 'warned the United States IN WRITING about Boston Bomber Tamerlan Tsarnaev in 2012'

• Saudis developed intelligence separately from Russia, which also warned the U.S. about the accused Boston bomber
• A letter to the Department of Homeland Security allegedly named Tsarnaev and three Pakistanis as potential jihadis worthy of U.S. investigation
• Red flags from Saudi Arabia to have included Tsarnaev's name and information about a planned explosive attack on a major U.S. city
• Saudi foreign minister, national security chief both met with Obama in the oval office in early 2013

If this is true, this was a terrible mistake by the United States and the Obama Administration, that borders on criminal neglect (by officials not following up on it).  Why is this not being questioned more in the media?  

After Fast & Furious, Benghazi, and now possible improper Eric Holder interference in this case, I am starting to connect the dots.  

Instapundit:  Not paying attention?  
John E at AoSHQ also wonders why no press coverage on this.  
The Lid has more...