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Murder suspect admits victim reached out to him ‘in her dying breath’


WOONSOCKET, R.I. (WPRI) — One of the suspects in the murder of an 81-year-old Woonsocket woman implicated the other in the stabbing and told police the victim reached out to him “in her dying breath,” according to a court document.

Tyler Grenon, 23, of Attleboro, and Matthew Dusseault, 20, of Woonsocket, are charged with first-degree murder and conspiracy in the March 2016 stabbing death of Constance Gauthier.

The warrant was filed by Woonsocket Police Detective Thomas Gormley to search Dusseault’s 101 Cote Ave. apartment.  

The document indicates Dusseault told police “he saw Grenon stab Gauthier 1 or 2 times” after he entered Gauthier’s home, located next door to Grenon’s family home, where the 23-year-old lived at the time of the murder. 

According to the medical examiner’s report, Gauthier was stabbed more than 60 times with two different knives. 

Dusseault told police “Grenon may have had two knives,” the affidavit states.

Police confiscated several items from Dusseault’s apartment, including a “large bag of assorted knives” and an assortment of electronic devices. 

Dusseault did not admit assaulting Gauthier, according to the warrant , but did tell police he was in the home during the stabbing, and admitted he helped Grenon stage the break-in as a robbery.

“He also admitted [that] Gauthier in her dying breath, reached out and grabbed him,” Gormley wrote. “He stated he never assisted her in any way.”

The document does not reveal a potential motive for the murder, indicating Grenon seemed determined to avoid leaving evidence.

Dusseault told Gormley that Grenon was “wearing plastic coverings on his feet, gloves and protective wear” during the crime.

Detective Gormley made note in the document of a “grim reaper” tattoo on Dusseault’s right arm, that included the number 63 on it. 

When asked, Dusseault had no explanation for the 63, but in the document Gormley recalled the number of stab wounds to Gauthier was in the 60’s.

“With the vague reasoning behind Dusseault’s tattoo, it leads one to believe it held the number 63 for a specific reason related to the crime,” Gormley wrote. “This provides the possibility Dusseault had more involvement.”

Both men made their initial court appearances last Wednesday and are scheduled to be back in court next Wednesday.

Grenon was arrested on non-murder charges related to the investigation a week after the killing. 

Gauthier was a lifelong resident of Woonsocket, who had worked for the school department and was a member of the city’s personnel board.

Her friends said she was an animal lover and very active.

Send tips to Target 12 Investigator Walt Buteau at and follow him on Twitter @wbuteau.

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