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Police: Man shot coworker's wife, then himself | News

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Police: Man shot coworker's wife, then himself

POTOMAC, Md. (WUSA9) -- A man accused of stealing from his workplace killed his coworker's wife and then himself, Montgomery County police said.

Andrew Racca, 42, of Chevy Chase worked with the victim's husband, C. Richard Mattingly. On Tuesday afternoon, Mattingly's wife Caroyln, 57, and Andrew Racca were found dead just minutes apart.

Racca was found dead from a bullet wound at the scene of a car crash on Piney Meetinghouse Road near River Road and Carolyn Mattingly was found after a small fire inside a garage at 12045 Great Elm Drive, officials said.

Carolyn Mattingly cause of death is a gunshot wound and is being considered a homicide, police said on Oct. 3.


About an hour before she was found dead, Carolyn Mattingly called police to report a vandalism. When officers responded to her home, they found that her tires had been slashed. Her husband was at work at the time of the vandalism, police said.

Racca and C. Richard Mattingly worked together at the Cystic Fibrosis Foundation in Bethesda, and issues arose between them regarding allegations that Racca was involved in workplace theft, police said.

On Monday, management had informed Racca that the foundation would have to report the possible theft to police. On Tuesday, Racca did not come to work, according to police.

Police believe Racca killed Carolyn Mattingly at her home before killing himself. A handgun was located in Racca's vehicle, police said. It is unknown whether Racca committed suicide before or after colliding with the tree.

Racca and Carolyn Mattingly do not have a known relationship, according to police.

Ballistic testing to determine if the same gun was used in the homicide and suicide has not been completed.

This case remains under investigation. Anyone with information about these incidents is asked to call the Major Crimes Division at 240-773-5070. Callers can remain anonymous.