The charges have been upgraded for two of the suspects in the weekend’s deadly shooting outside a nightclub that killed 1 and injured 8, authorities announced. The Amarillo Police Department’s Homicide Unit, in collaboration with the Potter County District Attorney’s Office, announced Wednesday night that the charges against Robert Kenney Knox and Nahryah Hilesta Ines Hayes have been upgraded to aggravated assault with a deadly weapon / mass shooting, with a total of eight counts, in addition to the murder charge related to the shooting incident that occurred on Sunday, Jan. 26 in the 700 block of South Polk…..