A murder case in the Alice area that went unsolved for decades.

The story of officer Matthew Murphy, he was shot and killed in Alice during a traffic stop back in December of 1974.

40 years later an arrest has finally been made.

An arrest warrant was issued for 70-year-old, Roberto Lopez for Murphy's murder.

When former Police Chief Weems took control of the department in 2013 he was determined to solve the murder of one of their own.

The case had been reviewed several times but Weems says it had been untouched for two decades before he reviewed it but from the beginning Lopez was a suspect.

No word on when court proceedings could begin.

Investigators with the APD are expected to release more information in the coming days.

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