Erik Bergum, 43, is accused of shooting his wife, Mary Beth Bergum, 37, before going to another residence, where he fatally shot his mother, Nancy Bergum, 64, Erie County Sheriff John Garcia said at a news conference.  Buffalo police are now calling 45-year-old Adam Bennefield a suspect in the murder of 40-year-old Keaira Hudson.Hudson was shot and killed the morning of Oct. 5 on the corner of Richlawn and Shawnee Avenues. Keaira Bennefield, 40, was killed on October 5 as she sat inside her car outside her mother's home, according to Spectrum News. Two of her children were in the back seat and witnessed the shooting.Authorities have issued an arrest warrant for her estranged husband, Adam Bennefield, in connection with the shooting.  Investigation into domestic violence report ends with husband shooting his wife to death during NCIS interview in Humble, Sheriff Ed Gonzalez said.  Quardreka Payne and her 8 year old son was killed by her husband Ricky Payne.