A Harvey man is being held in Cook County Jail, charged in connection with the murder of Chicago police Officer Enrique Martinez. Darion McMillian, 23, a resident of the 14500 block of Myrtle Avenue, is charged with two counts of first-degree murder, one count of attempted murder in the first degree, one count of unlawful use of a weapon with a machine gun/automatic weapon being in a vehicle, and one count of residential burglary.