Police: Suspect planned deadly attack on labor commissioner

Oklahoma City police take photos of Christian Costello, son of Oklahoma Labor Commissioner Mark Costello, before placing him in a police vehicle, Sunday, Aug. 23, 2015, at the scene where Mark Costello was fatally stabbed in Oklahoma City. Christian Costello was arrested on a first-degree murder complaint, police said. (Nate Billings/The Oklahoman via AP) LOCAL STATIONS OUT (KFOR, KOCO, KWTV, KOKH, KAUT OUT); LOCAL WEBSITES OUT; LOCAL PRINT OUT (EDMOND SUN OUT, OKLAHOMA GAZETTE OUT) TABLOIDS OUT; MANDATORY CREDIT

OKLAHOMA CITY (AP) – Oklahoma City police investigators believe the deadly stabbing of a prominent politician by his son was a premeditated attack and that the suspect intentionally separated his father and mother before the assault took place.

Those details were disclosed in a police affidavit filed Wednesday as part of a request for a search warrant for a condominium where 26-year-old Christian Costello lived. Costello has been jailed on a preliminary charge of first-degree murder for the Sunday night stabbing death of his father, Oklahoma Labor Commissioner Mark Costello.

Inspector Cris Cunningham wrote in the affidavit that Christian Costello asked to speak to his father alone, “thus separating him from another family member who was present at the location.”

Cunningham wrote that no items were taken during Tuesday’s search of the condo.

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