Police: Riverdale man killed wife because of nagging

<p>A man accused of stabbing his wife to death during an argument told his sister he did it because his wife kept nagging him, a Riverdale police detective testified.</p><p>Keith Andre Mitchell, 46, turned himself in to Riverdale police shortly after Agnes Mitchell's killing on the night of Dec. 1.</p><p>Keith Mitchell appeared in the Clayton County courtroom Tuesday but was not called to testify. After testimony, Magistrate Michael Baird ordered the murder charge to a grand jury.</p><p>The couple had been married for about 10 months, said Keith Mitchell's sister, Valerie Mitchell.</p><p>At the time of the killing, Keith Mitchell was on probation after pleading guilty to domestic violence charges in connection with another fight with his wife in August, authorities said.</p><p>___</p><p>HASH(0x28675f8)</p>