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Arlington Police Chief Frederick Ryan called the case “ heart-breaking.”

Arlington Police Chief Frederick Ryan called the case “heart-breaking.”

Charges have been brought in a pedestrian collision that killed a Cambridge woman last December, an Arlington police spokesman said today.

Paul S. Giragosian, 68, of Arlington, has been charged with motor vehicle homicide by negligent operation, following what a news release said was a thorough investigation by Arlington police investigators.

On the evening of Dec. 19, Elba Ortiz-Delgado, age 77, of North Cambridge, was walking in a crosswalk at Massachusetts Avenue and Orvis Road in East Arlington when she was struck by a car driven by Giragosian. The victim was taken to Massachusetts General Hospital, where she died.

At the time, Giragosian was cited for driving without a license and failure to yield to a pedestrian at a crosswalk, but the case remained under investigation.

Arlington police investigators worked with the office of Middlesex District Attorney Marian Ryan to investigate and ultimately charge Giragosian with motor-vehicular homicide.

The investigation included a State Police collision analysis and reconstruction section report, which came back recently. The report, combined with the Arlington Police Department investigation, resulted in the allegations against Giragosian.

“This was a heart-breaking case, involving the tragic loss of life of an elderly woman who was trying to cross the street in a crosswalk,” Chief Frederick Ryan said in a news release.

Giragosian was given a summons today to appear in Cambridge District Court for arraignment Dec. 19.

A version of this story appeared originally on

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