for you. >> i'm john berman. it is monday, april 1st. 5:00 a.m. in the east. we're going to start in texas where at this moment there is an intense manhunt under way. the search for some person or some people targeting public officials for assassination. the latest victim, kaufman county district attorney mike mclelland. he and his wife gunned down in their home southeast of dallas. this is the same county where less than two months ago, assistant district attorney was killed as he walked to work. officials have not yet publicly linked the two killings. but this morning there is tightened security at the courthouse and that community clearly on edge. our george howell is there live from kauffman, texas, with this developing story. what's the latest? >> john, good morning. no new leads in this mysterious murder case. investigators are not any closer to narrowing down a suspect in this case. but we are, john, hearing from several public officials here and they say this, they believe