Medical center explosion that killed woman may have been intentional

Medical center explosion that killed woman may have been intentional  CBS News 1 Dead, 3 Hurt In Suspicious Explosion At Southern California Office Complex  NPR Aliso Viejo deadly explosion likely an intentional act, official tells AP  KABC-TV Deadly Explosion at Aliso Viejo Medical Building Was 'Intentional Detonation'  NBC Southern California Woman killed in 'suspicious' explosion at Aliso Viejo office building  Los Angeles TimesFull coverage