"Pentagon records provide the clearest view yet of the U.S. tactics used at Anu Ghraib and elsewhere to coax secrets from Iraqis. Brutal interrogation techniques by U.S. military personnel are being investigated in connection with the deaths of at least five Iraqi prisoners in war-zone detention camps, Pentagon documents obtained by The Denver Post show. The deaths include the killing in November of a high-level Iraqi general who was shoved into a sleeping bag and suffocated, according to the Pentagon report. The documents contradict an earlier Defense Department statement that said the general died "of natural causes" during an interrogation. Pentagon officials declined to comment on the new disclosure."