Police in Hong Kong have arrested a man suspected of carrying out an acid attack that injured 30 people.
A police spokesman said the man had been detained after he was spotted on a rooftop near the scene of Saturday's attack in the Kowloon area.
Nine of those hurt in the attack were tourists, police said.
The BBC reports more than 100 people have been injured in similar attacks since December 2008 when bottles of acid were dropped from buildings in a pedestrian zone.
