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A dispute at a Burnaby Starbucks turned deadly on July 12, 2017.

And it's resulted in a jury convicting Lawrence Alvin Sharpe today of manslaughter while acquitting his girlfriend, Oldouz Pournouruz, of the same crime.

Michael Page-Vincelli, 22, allegedly threw a lit cigarette at Pournouruz and called her a "dirty immigrant". This came after she had reportedly thrown the butt on the ground outside the coffee shop in the 6500 block of Hastings Street.

Pournouruz immediately went into the nearby Royal Bank to tell her boyfriend, who then marched into the Starbucks with her following.

Video showed that Sharpe went up to Page-Vincelli and sucker-punched him in the head. He later died in hospital of his injuries.

Sharpe told police that he was acting in self-defence, but that was contradicted by closed-circuit video evidence taken inside the Starbucks outlet.