A second audio recording has been released of three marines, accused of murdering an Afghan man, in conversation before the alleged incident.
The men, who are being tried by a court martial, deny the charge of murder following the incident in September 2011.
In the recording one marine can be heard saying: "Anyone want to do first aid on this idiot?"
Later in the recording, a marine says: "I can put one in his head if you want."
Another adds: "Not in his head because that would be f****** obvious."
The court martial board are deliberating their decision.
A commando in the Royal Marines has been convicted of the killing of a seriously injured Afghan fighter, described as "an execution".
Still images and audio recordings of three Royal Marines allegedly murdering a captured Afghan man in 2011 have been released.