Police have reclassified a Yuen Long wounding case as murder after the death of the 18-year-old victim.

About 9.30pm December 26, Police received a report that a man was attacked inside a park on Sai Ching Street. Officers found him with head and body injuries. He died at Tuen Mun Hospital about 9pm yesterday.

Police believe he was attacked by seven other men, one armed with a glass bottle. A post-mortem examination will be conducted.

Anyone who witnessed the attack, or who has information to offer, should call Police on 2473 8360.