Not sure about any of the men involved in James Byrd's death being put to death yet. I tried to do a google search for Peter Langen and didn't find anything.
Not yet.
Try Peter Langan. He was a member of the Aryan Republican Army. Robbed a bank branch in Green Bay where a friend of mine worked.
http://www.meta-religion.com/Extremism/White_extremism/Aryan_republican_army/aryan_republican_army.htm
Peter Langan, one member of the ARA robbery gang, told AP he plans to testify at Nichols' trial that federal prosecutors several years ago offered and then withdrew a plea deal for information he had about the Oklahoma City bombing.
from http://www.foxnews.com/story/0,2933,133215,00.html