Katie Tangey, 27, died after arsonists hit the wrong address while she was house-sitting her brother’s home in Truganina in January

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A house fire which killed a “completely innocent” woman is a case of mistaken identity linked to Melbourne’s tobacco wars, police say.

Katie Tangey, 27, died after arsonists hit the wrong address while she was house-sitting her brother’s home in Truganina, in the city’s west, in the early hours of 16 January.

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