An Indiana doctor accused of killing four people with ties to a Nebraska medical school that fired him was denied medical licenses in at least two states after the dismissal from Creighton University more than a decade ago. Authorities have not disclosed a motive in the slayings, except to note the firing. But documents show that the dismissal for erratic behavior in 2001 had long-lasting effects on Anthony Garcia's career. The slayings took place in two separate attacks five years apart.