The Washington Times - April 26, 2013, 10:39AM

The chairman of the House Foreign Affairs Committee says he’s convinced the Boston bombing suspects had ties to Islamic extremism in their native Chechnya.

“The mosque that the older brother attended in Chechnya is one of the most radicalized. The types of doctrine that comes out of that mosque are al-Qaeda-inspired,” Rep. Ed Royce, California Republican, told CNN’s “Starting Point” on Friday.

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Mr. Royce says that Chechen rebels, who for years have been engaged in terrorist attacks in a push to break from Russia to form a caliphate — an independent Muslim state — for the Caucasus region, are linked “to this particular al Qaeda network.”

“They have a wider vision of what they want to do with a caliphate and apparently the older brother, for the six months that he was there, was brought into the fold in terms of that movement,” he said.

The chairman added that the FBI failed to properly follow up on tips from Russian officials that Tamlerlan Tsarnaev poised a security threat.

“Clearly, enough was not done in order to monitor the activities here, especially given the fact that it wasn’t one head’s up we were given but several,” Mr. Royce said. “I do have questions, absolutely.”