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(Des Moines, IA) -- A man is arrested and charged with first-degree murder in the 1989 disappearance of a Western Iowa women. Iowa Attorney General Brenna Bird announced the arrest of 61-year-old Robert Davis of Council Bluffs today. He was the boyfriend of 31-year-old Barbara Lenz at the time of her disappearance. Lenz was last believed to be in her apartment in Woodbine in May of 1989. The Iowa Attorney General's Office and Harrison County Attorney's office will prosecute.