At least two people are suffering burns to their faces after a gas explosion at a restaurant in Waterloo.

The gas explosion happened at about 6.30pm Saturday night at a Chinese restaurant on Lachlan Street.

A 35-year-old man suffered burns to his arms and face and was rushed to St Vincent's Hospital.

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A terrible gas explosion (pictured) left two men with serious burns to their faces and arms

Two men, 29 and 35, were injured during the explosion at a Chinese restaurant in Waterloo

Roads were closed around the area, but has since reopened at Waterloo (pictured)

A 29-year-old man has serious burns to his face and right arm and was rushed to Royal Prince Alfred Hospital.

Six fire trucks are on scene and have the blaze under control, which reportedly left substantial damage to the restaurant.

Lachlan Street, Waterloo,between South Dowling Street and Bourke Street were previously closed to traffic but have since reopened.