Local drug agents combed Tarrant County on Wednesday in search of drug suppliers who may have provided heroin to a teen and man who died this week in Grapevine.
Authorities believe heroin could have been ingested by 34-year-old Pablo Brena and 18-year-old Cassidy Seward, a 2011 graduate of Grapevine High School.Final rulings on their deaths are pending toxicology results, according to the Tarrant County medical examiner's websiteBased on interviews with witnesses, Grapevine police believe that Seward and Brena had taken heroin."We believe the cases are unrelated in that they didn't know each other," said Grapevine police Sgt. Robert Eberling on Wednesday. "But we believe heroin was involved."Officers with the Tarrant County Narcotics Unit are investigating the cases."The trouble will be that users get their drugs from several suppliers," said Herschel Tebay, commander of the narcotics unit. "It's too early to say if the heroin was stronger than what they had used before."The first death reported was Brena's on Sunday. The Argyle man was found in a Grapevine apartment in the 800 block of E. Walnut St. He was rushed to the emergency room at Baylor Regional Medical Center at Grapevine where he died at about 1 a.m. on Sunday.Witnesses have told authorities that Brena had a history of taking heroin.Family members could not be reached Wednesday.On Tuesday afternoon, Seward was discovered at her home in the 400 block of Holly Street in Grapevine. She was rushed to the emergency room at the Grapevine hospital where she was pronounced dead shortly after 4:30 p.m. Tuesday.Grapevine-Colleyville school district records indicated that Seward had attended Bridges Accelerated Learning Center in Colleyville and completed her school work in April 2011. Her home school was Grapevine High.On her Facebook page, Seward posted among her favorite "likes" was The Heroin Diaries: A Year in the Life of a Shattered Rock Star. It's the story ofMotley Crue bassist Nikki Sixx.Domingo Ramirez Jr., 817-390-7763Twitter: @mingoramirezjrHave more to add? News tip? Tell us

