A father in Sydney has been charged with murder for allegedly setting the house fire that killed three of his children.

Two boys, aged two and six, and a five-month-old baby girl died in their Lalor Park family home last Sunday.

The man allegedly blocked the children from leaving the home as it burned, stopping them from running to safety.

Australian correspondent Murray Olds says the man was charged with three counts of murder and five counts of attempted murder after coming out of an induced coma.

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