Document says crime was ` ` especially heinous , atrocious or cruel '' Co - workers complained after Nolen spoke of not liking white people , official says . FBI called because suspect ` ` was saying Arabic terms '' during attacks , official says . `` That investigation is still ongoing , and it is unclear at this time whether the crime was an act of terrorism , workplace violence or a gruesome combination of both , '' Fallin said in a statement . Alton Alexander Nolen , 19 , is charged with murder , attempted murder , assault .
Document says crime was ` ` especially heinous , atrocious or cruel '' Co - workers complained after Nolen spoke of not liking white people , official says . FBI called because suspect ` ` was saying Arabic terms '' during attacks , official says . Alton Alexander Nolen , 19 , is charged with murder , attempted murder , assault .