http://www.cbsnews.com/stories/2011/10/11/earlyshow/main20118456.shtml

(CBS News) CBS News has learned a congressional subpoena directed to Attorney General Eric Holder could go out as early as Tuesday, ordering him to turn over documents to lawmakers about when he was aware of a controversial gun smuggling operation known as Fast and Furious.

CBS News investigative correspondent Sharyl Attkisson reports the the subpoena will come from the House Oversight Committee, led by Republican Darrell Issa. It will ask for communications among senior Justice Department officials related to Fast and Furious and "gunwalking."

The subpoena will list those officials, says Attkisson - more than a dozen of them - by name.

In Fast and Furious, the ATF allegedly allowed thousands of assault rifles and other weapons into the hands of suspected traffickers for Mexican drug cartels. The idea was to see where the weapons ended up, and take down a cartel. But the guns have been found at many crime scenes in Mexico and the U.S., including the murder scene of Border Patrol Agent Brian Terry last December.

A source familiar with the Oversight Committee's plans tells CBS News the subpoena request was prompted by the Justice Department dragging its feet in voluntarily turning over information to investigators, and new documents obtained by CBS News last week which seem to contradict Holder's account of when he learned of the operation.