The explosion occurred around 2pm this afternoon at the shop located on Bonham Street.

A female staffer surnamed Chiu said the technician surnamed Yeung was replacing two petroleum gas tanks for the drying machine at the time. The machine didn't work with new gas tanks so Yeung unscrewed the gas tank valves but it exploded, burning both his hands.

Yeung also sustained burns to his feet and head. Chiu saw her right hand and cheeks injured by the explosion as well.

Paramedics then rushed Yeung in a conscious state to Queen Mary Hospital.

Firefighters later carried three gas tanks outside the shop and showered water on them. Burnt clothes were also removed from the shop.

Police after preliminary investigation suspected the leaked gas was ignited leading to the incident. The case has been listed an industrial accident and police investigation is still ongoing.