'TERRORISTA #1' ARRESTED IN BOSTON...

◼ Azamat Tazhayakov and Dias Kadyrbayev were reportedly arrested, along with one other person, for allegedly making false statements and conspiring to obstruct justice during the federal investigation into Boston Marathon bombing suspects Tamerlan and Dzhokhar Tsarnaev, officials said Wednesday. - Daily Caller

◼ PAPER: Saudi Arabia warned USA in writing about Tamerlan Tsarnaev in 2012 - Daily Mail

Saudi Arabian ambassador in Washington now DENIES his nation warned the United States about Tamerlan Tsarnaev in 2012, Rejected his application for entry visa to visit Mecca in 2011

Saudi embassy in Washington D.C. issues denial of account of a senior official who talked to MailOnline

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

◼ AP: Russia had elder Boston suspect under surveillance - The Telegraph

Russian agents placed the elder Boston bombing suspect under surveillance during a six-month visit to southern Russia last year, then scrambled to find him when he suddenly disappeared after police killed a Canadian jihadist, a security official told The Associated Press.

U.S. law enforcement officials have been trying to determine whether Tamerlan Tsarnaev was indoctrinated or trained by militants during his visit to Dagestan, a Caspian Sea province that has become the center of a simmering Islamic insurgency.

The security official with the Anti-Extremism Center, a federal agency under Russia's Interior Ministry, confirmed the Russians shared their concerns. He told the AP that Russian agents were watching Tsarnaev, and that they searched for him when he disappeared two days after the July 2012 death of the Canadian man, who had joined the Islamic insurgency in the region. The official spoke only on condition of anonymity because he was not authorized to speak to the news media.

Security officials suspected ties between Tsarnaev and the Canadian — an ethnic Russian named William Plotnikov — according to the Novaya Gazeta newspaper, which is known for its independence and investigative reporting and cited an unnamed official with the Anti-Extremism Center, which tracks militants. The newspaper said the men had social networking ties that brought Tsarnaev to the attention of Russian security services for the first time in late 2010.

◼ Wife to claim Tamerlan Tsarnaev's body; Cause of death to be divulged - USA Today