DES MOINES, Iowa (AP)- The Iowa Court of Appeals has tossed out life sentences automatically imposed on two Iowans who were convicted of murders committed when they were 17. In rulings issued Wednesday, the Iowa Appeals Court cited a recent U.S. Supreme Court ruling in ordering new sentences be given to Thomas Bennett and Christine Lockheart. The U.S. court ruled in an Alabama case that mandatory life sentences without parole could not automatically be imposed on juveniles as they can be imposed on adults. Bennett and two accomplices were convicted of shooting to death a Des Moines man in 1998. Lockheart and her boyfriend were convicted of stabbing to death a retired Davenport bus driver in 1985.