From Drew Griffin, CNN Correspondent

Tapes obtained by CNN of interrogations of a group of U.S. servicemen charged with the unprovoked killings of Afghan civilians describe gruesome scenes of cold-blooded murder carried out under the influence of illegal drugs.

The following is a partial transcript of those tapes, between a military investigator and Cpl. Jeremy Morlock, one of the five U.S. soldier charged with the premeditated murder of three Afghan civilians.

"So we met this guy by his compound, so Gibbs walked him out, set him in place, was like standing here," said Morlock, detailing how, on patrol earlier this year and under the command of his sergeant, Calvin R. Gibbs, he and others took an Afghan man from his home, stood him up and killed him.

"So, he was fully cooperating?" the military investigator asks on the tapes.

"Yeah," Morlock responds. FULL POST