A 29-year-old man has been charged after allegedly pointing a gun at people waiting for a train in Sydney.

Mohamad Zreika allegedly pointed a pistol at commuters waiting at Lidcombe railway station, before boarding a train to Bankstown at 5.30pm yesterday.

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He was arrested at Bankstown and police found a replica pistol, which they took for forensic examination. He was charged with affray and possessing an unauthorised pistol.

He was taken to hospital for a mental health assessment.

He was refused bail to appear before Bail Division Local Court 7 today.

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