At least two young children have been killed and scores injured after a 52-year-old woman crashed her Toyota Kluger into a primary school in southwest Sydney.

Two eight-year-old boys were rushed to a hospital in critical condition but died from cardiac arrest after the sports utility vehicle smashed through the wooden wall of Banksia Road Primary School, police confirmed. Three other pupils, all girls aged eight and nine, were also brought to the hospital with injuries. They remain in serious or stable condition.

Another 16 children and their teacher were treated on the spot for minor injuries. Police said there were 24 primary-age children in the class when the collision happened on Tuesday morning.

Authorities have detained the driver, who was uninjured in the crash, and have taken her to the hospital to conduct blood and urine tests. The driver allegedly lost control of the vehicle while either exiting the school grounds or trying to park the Toyota.

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