Man Hurt in Woburn Shooting That Left Another Man Dead Argues Self-Defense in Court

Tyler Olivier was taken to the hospital following the shooting Monday morning and was later arrested, prosecutors said

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A man who was shot and wounded in an incident that left another man dead Monday morning in Woburn, Massachusetts, appeared in court Tuesday as the investigation continued.

Two men were shot during the incident at the Washington Street residence — 22-year-old Mussie Nirayo, who was pronounced dead on scene, and 26-year-old Tyler Olivier, who was taken to a hospital, later arrested and is now facing charges, according to prosecutors.



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Olivier faced a Woburn District Court judge for an arraignment on charges of possession of a firearm and assault and battery with a dangerous weapon Tuesday.

His attorney said he acted in self-defense during a home invasion.

He was ordered held on $50,000 bail and is expected back in court March 28.

But Olivier is facing other charges from 2021 and 2022, including accusations of stabbing a man and a pregnant woman and violating a restraining order. The judge revoked his bail in those two cases.

Sources tell the NBC10 Boston Investigators that the man who survived the double shooting is Tyler Olivier, who was accused in 2021 of slashing and stabbing a man and a pregnant woman. The crime also took place on Washington Street.

Police Called to Woburn, Mass. Home for Report of Disturbance

Officers with the Woburn Police Department responded to the home on Washington Street for a report of a disturbance at around 3:40 a.m. on Monday, according to a news release issued by the Middlesex County District Attorney's Office on Monday night.

Police say they found one person dead inside a Washington Street home in Woburn, Massachusetts, early Monday morning. Another man was injured.

When police got to the home, they found the two men with apparent gunshot wounds. Nirayo, who was pronounced dead, was found wearing a mask with a gun in hand.

Court documents state that Olivier told officers he knew Nirayo, but that he later said he didn't. An earlier press release from police said the two men knew each other, but later Monday night, prosecutors said an investigation into whether they knew each other was ongoing.

Ongoing Investigation by Mass. Authorities

The investigation into the shooting remained ongoing, and involved several law enforcement agencies, including the Middlesex County District Attorney's Office, Massachusetts State Police detectives assigned to that office, as well as the Woburn Police Department.

Police in Woburn have blocked off a home in one neighborhood where an active investigation is underway.

The prosecutors who have been assigned to the case were Graham Van Epps and Jacob McCrindle.

Tyler Olivier's History

Sources told the NBC10 Boston Investigators earlier Monday that Olivier was the man who survived and that he was accused in 2021 of slashing and stabbing a man and a pregnant woman. That crime also took place on Washington Street.

NBC10 Boston's Kaitlin McKinley Becker contributed to this report.

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