Newcastle Knights forward Pauli Pauli reportedly has been involved in a serious car crash.

Australian media outlets including Channel Seven reported the Knights big-man was one of 10 people injured in a seven-car pileup on the M1 north of Sydney at around 9.30pm on Wednesday night.

He is believed to have sustained a hip and leg injury, and was in Gosford Hospital on Thursday morning.

New South Wales Police said in a statement that eight people were injured, with one in a critical condition.

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The Knights were contacted by Australia's Fox Sports but could not provide further details.

Pauli joined the Knights last year on a two-year deal, tallying 15 games for the club in 2016.