Mussie Nirayo, as a teen. (Photo: Anthony Galluccio)

North Cambridge’s Mussie Nirayo will be remembered Saturday with a memorial, burial and reception. The 22-year-old was shot fatally early Monday in Woburn under murky circumstances.

“His family received a call [Monday] informing them of their loss and they have been in unspeakable pain since,” according to an online fundraiser for the family’s funeral expenses.

Police came to a home on Washington Street in Woburn shortly after a 3:40 a.m. shooting incident. Nirayo died on the scene and an injured Tyler Olivier, 26, of Woburn, was taken to a hospital for treatment of gunshot wounds.

Olivier was arrested and charged with possession of a firearm and assault and battery with a dangerous weapon, authorities said. In court, he suggested Nirayo and another man were breaking into his mother’s home, where he lives, and he shot in self-defense. “He saw an arm with a gun come through his door,” CBS Boston reported, quoting a prosecutor as saying that “by his account he retrieved the gun, picked it up and shot.”

Haben Nirayo, who organized the crowdfunding campaign for funeral expenses, said Mussie Nirayo will be “deeply missed” and “always be remembered for his charisma, his ambition and the way he lifted up those around him.”

“To know the Nirayo family is to love them. They are special and unique people in their positivity and generosity,” said the crowdfunding campaign.

Mussie Nirayo is survived by parents Amanuel and Askalu and brother Haben, according to the campaign. He had been a Cambridge Rindge and Latin School student and athlete.

Friends and family plan a memorial service at 8 a.m. at St Mary Orthodox Church, 8 Inman St., Mid-Cambridge, a burial at 9:30 a.m. at Cambridge Cemetery, 76 Coolidge Ave., West Cambridge, and a reception from 11 a.m. to 8 p.m. in the Rindge Avenue Community Room, 402 Rindge Ave., North Cambridge.