Gunman 'lying in wait' kills 3 Pittsburgh officers http://news.yahoo.com/s/ap/20090405/ap_on_re_us/pittsburgh_shooting_19

5 children found slain in Washington state, police say http://www.cnn.com/2009/CRIME/04/04/washington.children.shot/index.html

Binghamton struggles to understand why gunman killed 13 http://www.cnn.com/2009/CRIME/04/04/binghamton.shooting/index.html

4.8.2009 4 shot, 1 dead at Korean retreat center in Calif.
http://news.yahoo.com/s/ap/20090408/ap_on_re_us/retreat_shooting