FBI investigators have detained five Muslim American men in Pakistan, according to the New York Times.
The men, who are from the suburbs of Washington, are suspected of jihadist training with Al Qaeda and the Taliban in Pakistan to fight American troops in Afghanistan.
Although the men have not been charged with anything in Pakistan, American officials said they want to bring them back to the U.S. to be charged.
Officials said the men used internet sites like Facebook and Youtube to link up with extremists in Pakistan, according to NPR.
A search of the suspects' computers showed they had watched Youtube videos with U.S. troops fighting in Afghanistan.
"Basically most of the noise on the Internet are the clarion calls to battle from the jihadis, the inspirational and motivational messages that they communicate," said Bruce Hoffman, a terrorism expert at Georgetown University. "And there has really been almost no concerted, systematic and strategic effort to counter those messages."