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Judge Enters Not Guilty Plea For Oklahoma Politician's Son

Christian Costello at the Oklahoma County Jail Monday after his Sunday arrest for the stabbing death of his father, Labor Commissioner Mark Costello.
Oklahoma County Sheriff's Office

A judge has entered a not guilty plea for the son of Oklahoma's labor commissioner on a first-degree murder charge in the stabbing death of his father. 

Christian Costello appeared in a video arraignment before Oklahoma County Special Judge Russell Hall Wednesday in connection with the stabbing death of his father,Oklahoma Labor Commissioner Mark Costello.

The 26-year-old Costello said nothing as Hall entered the not guilty plea and appointed the Oklahoma County Public Defender's Office to represent him. Hall set a preliminary hearing for Sept. 24.

Authorities say Costello pulled out a knife while he and his 59-year-old father talked Aug. 23 at an Oklahoma City restaurant. Police say they interviewed at least 17 witnesses, all of whom say they saw Christian Costello stabbing his father with a knife.

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