DALLAS (AP) – The Dallas district attorney has dismissed the capital murder case against a man indicted last year in the 1983 slaying of a Farmers Branch police officer.

In a statement released Friday, the spokeswoman for DA Craig Watkins said dismissing the case against Gary Wayne Pettigrew was “the right thing to do in the interest of justice.” The statement referred to information leading to additional suspects, but gave no details. The case remains under investigation.

Last summer, Watkins announced that then-63-year-old Pettigrew faced a capital murder charge in the 1983 slaying of Farmers Branch Police Officer Lowell Tribble.

Police say Tribble was 37 and married with children when he was killed. He remains the only fallen officer in the history of Farmers Branch, a suburb immediately north of Dallas.

(Copyright 2011 by The Associated Press.  All Rights Reserved.)

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