Crime scene: Chief Executive Donald Tsang visits the site of yesterday's corrosive fluid attack in Causeway Bay.

Chief Executive Donald Tsang has urged Police to make every effort to track down the culprit behind yesterday's corrosive liquid attack in Causeway Bay.

The fluid fell from a Lockhart Road building about 10pm, injuring six passers-by. Two remain in hospital.

Inspecting the crime scene this morning, Mr Tsang said is he infuriated by the attack, made at such a popular location at such a busy hour.

While acknowledging the difficulties in detecting such crimes, he said Police have been ordered to make strenuous efforts to bring the culprit to justice.

He wished the injured a quick recovery.