WARSAW - Poland plans to seek the extradition of an American on suspicion of WWII crimes against humanity, Poland's government-affiliated history institute said on Monday. The Institute of National Remembrance (IPN) said in a statement that Michael K. is suspected of ordering the killing of 44 Poles in 1944 in eastern Poland when he was a commander in the Nazi's SS-led Ukrainian Self Defense Legion. As a result of that order, several villages - including Chlaniow and Wladyslawin - were set on fire and buildings destroyed, IPN said. It has asked a regional court in Poland's Lublin to issue an arrest warrant for Michael K. as the first step towards an extradition request.