NEW : Prosecution faces `` a more complicated '' challenge , CNN 's Jeffery Toobin says . The case is being prosecuted by the U.S. Attorney's office in Manhattan and involves allegations that Russian operatives tried to influence American politics through social media during last year's presidential election. That means she faces the possibility of the death penalty . In a rebuttal , Martinez countered that actions Arias took after the killing , such as cleaning up the scene , made it clear that she understood what was going on . A prosecutor argues that Travis Alexander suffered and felt physical pain .
NEW : Prosecution faces `` a more complicated '' challenge , CNN 's Jeffery Toobin says . The case is being prosecuted by the U.S. Attorney's office in Manhattan and involves allegations that Russian operatives tried to influence American politics through social media during last year's presidential election. That means she faces the possibility of the death penalty . A prosecutor argues that Travis Alexander suffered and felt physical pain .