Alva Review-Courier -

PHOENIX (AP) — Dwight Lamon Jones apparently never put his bitter divorce behind him.

Almost eight years after splitting from his wife, the Phoenix-area man began confronting people connected with the breakup and shooting them, killing six people in four days last week before ending his own life as police drew near, authorities said.

A day after Jones' death, police said they did not know why he waited so long to seek vengeance. But experts said it's not unusual for killers who feel wronged by catastrophic life events to wait years to settle old scores.

"Most mass killings in American history...