Police have made an arrest in the homicide that happened Monday at Boomtown Casino. 50-year-old Christopher Meecham was arrested yesterday in Concord, California. He’s being held in the Contra Costa County Sheriff’s Office jail on open murder charges and is awaiting extradition to Nevada. Meecham is accused of killing 53-year-old David McMillan. Details of the relationship between the victim and the suspect have not been released.