Suspect Accused Of Killing 18-Year-Old Woman At Oakland BART Station Arrested

    Photo: abc7news.com   John Cowell, who is the suspect in the double stabbing at MacArthur BART that left one sister dead and another injured has been arrested.     The police say they followed up on tips from the public and found Cowell on an Antioch-bound train.   BART Police Chief Carlos Rojas held a media availability