Rex HeuermannJames Carbone-Pool/Getty Images Tap Here To Add Us Weekly As A Trusted Source Add as a preferred source on Google A 66-year-old Florida man has been arrested and charged with killing single mother Tanya Denise Jackson, a Gulf War veteran, and her little girl, Tatiana, who were previously believed to be victims of the infamous Long Island Serial Killer. Andrew Dykes, who lives in Tampa, was arrested on Wednesday, December 3, and is being held on a fugitive warrant in the Sunshine State as he awaits extradition to New York, where sources claim the murders occurred.