The father of a man killed by a rogue Afghan soldier is expressing his disappointment after the killer was set free.

Hekmatullah was released from jail after seven years under a prisoner swap negotiated by the United States.

Private Robert Poate, Lance Corporal Stjepan “Rick” Milosevic and Sapper James Martin were killed as they played cards at their base in Afghanistan in 2012.

Private Robert Poate’s father, Hugh Poate, told Ben Fordham the murder of the three soldiers never should have happened.

“We were always hoping that he wouldn’t be released because he was a fairly high-value prisoner.”

Click PLAY below to hear the full interview