Hillsboro, MO (KSDK) - In a second trial, a Jefferson County jury convicted a former Calverton Park police officer of murdering of his fiancée.
Robert Brooks, 43, was originally found guilty in the death of 26-year-old Amanda Cates in August 2007 and sentenced to life in prison. In 2010, the Missouri Supreme Court ordered a retrial, ruling that prosecutors made improper comments at the trial about Brooks denying investigators a statement after he was informed of his Miranda Rights.
The second trial wrapped Friday with closing arguments. The jury deliberated for about four hours before convicting Brooks of second-degree murder.
Amanda Cates, a school resource officer at Normandy Middle School, was found gunned down in her home in Crystal City on August 29, 2006. Cates lived at the house with Brooks and his daughter.
Brooks previously testified that he came home from a night of drinking with a female Calverton Park police officer on the night of the incident.
On Friday, Brooks claimed Cates attacked him when he came home, throwing the remote control and an alarm clock at him. He said she grabbed his loaded gun that had been on his bed and threatened him.
Brooks said he shot Cates in a struggle for the gun.
Brooks also testified that Cates threatened him with a gun three weeks before the murder.