A Republican-led House committee is asking the Obama administration for all information on the Boston bombing suspect once flagged for possible radical ties, saying the tragedy marks another intelligence failure and raises “serious questions about the efficacy of the federal counter-terrorism efforts.”

The letter was sent Saturday by the House Committee on Homeland Security to Homeland Security Secretary Janet Napolitano, National Intelligence Director James Clapper and FBI Director Robert Mueller.

In the letter, Committee Chairman Rep. Mike McCaul said bombing suspect Tamerlan Tsarnaev appears to be the fifth person since 9/11 to participate in a terror attack, despite being under FBI investigation.

McCaul, R-Texas, said the incidents “raise the most serious questions about the efficacy of the federal counter terrorism efforts.”

Tsarnaev, 26, was killed early Friday morning in a police shootout. His 19-year-old brother, Dzhokhar Tsarnaev, was captured by police that night and remains in the hospital.

The older Tsarnaev was interviewed by the FBI in 2011 before a six-month overseas trip, including time in Russia. In addition, he posted jihadist material on his social media site.

On Saturday, two U.S. law enforcement officials said the FBI was acting on information from the Russian intelligence security service that Tamerlan Tsarnaev was a follower of radical Islam.
“Yet Tsarnaev remained at liberty in this country to conduct the Boston attack, and it took days to publicly identify him as a suspect,” wrote McCaul, who wants the information by Friday.