(MOBILE, Ala.) Jan.26 - Mobile police sources tell NBC 15 News they've arrested a man believed to be a domestic terrorist. The investigation began January 5, when a local synagogue was spray painted with Nazi markings. Mobile Police are not making an official comment yet, but sources within the department say they got a very dangerous man off the streets, just in time. Words of hate were spray-painted all over the Congregation Tree of Life synagogue three weeks ago. They are markings that shocked its congregation. Member Barbara Morgan couldn't believe it.