Woman shot grandson, then herself, investigation finds

MARYSVILLE — A Marysville grandmother shot her adult grandson in the head last month before pulling the trigger on herself, police said Tuesday.

Marysville police have completed their investigation into the July 6 deaths of Shirley Irene Champagne, 70, and Carrington Michael Costa, 26.

“The final determination was murder-suicide with the grandmother being the shooter,” police Cmdr. Robb Lamoureux said Tuesday.

The shooting happened at Shirley Champagne’s home at Glenwood Mobile Estates park along 64th Street NE.

The bodies were found early July 6 by her husband, who called 911.

Investigators have not released additional details about what they think happened at the home leading up to the shooting.

Shirley Champagne recently had gone to Florida to pick up her grandson and bring him back to live with her and her husband.

Court records from Florida show that Costa had a history of mental health problems. His family there had called police to report his violent behavior as recently as June.

Police believe Costa was off his medication at the time of his death.

He died from multiple gunshot wounds to the head, according to the Snohomish County Medical Examiner’s Office.

The Champagnes moved to Marysville about a year before the shooting.

Family members in Florida did not return calls from The Herald.

Rikki King: 425-339-3449; rking@heraldnet.com

More in Local News

Majority of Marysville City Council seats are contested

The most closely watched race is between Mark James and Donna Wright.

500 tires go up in flames at a store south of Everett

There were no injuries. And it was nowhere near as bad as that months-long tire fire in 1984.

Inclusion super important to Monroe High senior

Sarah Reeves worked to make homecoming more representative of the student population.

A pot deal between teens leaves them injured, facing charges

Police found out about the incident when both ended up at the same hospital that night.

Funds up for council vote would aid conservation district

District stands to receive an extra $1 million each year, if the County Council gives its approval.

Herald photos of the week

A weekly collection of The Herald’s best images by staff photographers and… Continue reading

Lake Stevens man injured by 50-foot fall near Leavenworth

The rescuers had to tie in to keep from falling due to the steep rugged terrain.

Lynnwood mayor challenged by councilman in general election

Three City Council members also are facing challengers on the Nov. 7 ballot.

Missing 6-year-old’s body found in trash bin near Lynnwood

Dayvid Pakko was mildly autistic. A suspect in his death is a relative, the sheriff’s office said.

Most Read