Posted By Josh Rogin 
Friday, April 19, 2013 - 8:18 PM 
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President Barack Obama spoke with Russian President Vladimir Putin Friday evening and thanked the Russian leader for unspecified cooperation in the investigation into the Boston Marathon bombings.
As law enforcement officials surrounded the Watertown location where 19 year old suspectDzhokhar Tsarnaev was suspected to be hiding, the White House released a read out of the Obama-Putin phone call, which referenced the United States and Russia working together on the Boston bombing issue.
"President Putin expressed his condolences on behalf of the Russian people for the tragic loss of life in Boston. President Obama thanked President Putin for those sentiments, and praised the close cooperation that the United States has received from Russia on counter-terrorism, including in the wake of the Boston attack," the statement said. "The two leaders agreed to continue our cooperation on counter-terrorism and security issues going forward."
National Security Staff Spokeswoman Caitlin Hayden told The Cable the White House won't say what kind of cooperation the Russians provided.
"We'll decline to provide further details at this point," she said.
Dzhokhar Tsarnaev and his older brother Tamerlan, who was killed Thursday night, were of Chenyan ethnicity but hailed from the Russian region of Dagestan and spent several years living in Kyrgyzstan. Dzhokhar Tsarnaev became a naturalized American citizen on Sept. 11, 2012.