HONG KONG — Hong Kong police have arrested two suspects in connection with a recent acid attack in the densely populated southern Chinese financial hub.

Hong Kong police said in a statement late Wednesday that the 18-year-old and 23-year-old men were allegedly linked to an acid attack in the Causeway Bay shopping district on Dec. 12, when corrosive liquid was tossed from a building, injuring six people.

Hong Kong police spokeswoman Michelle Mak said the two weren't immediately charged and that the 18-year-old was freed on bail. She said it still wasn't clear if the suspects were involved in other similar acid attacks.

In the most recent attack on Saturday night, two bottles of acid were hurled from a building overlooking Temple Street in Kowloon peninsula, a popular tourist spot known for its outdoor market and snack stalls. At least 30 people were injured. (AP)