Hong Kong ( CNN ) -- Dozens of people were injured Friday in a high-speed ferry boat accident off of Hong Kong 's coast . The boat struck an unknown object near Sunshine Island around 1:20 a.m. , a government spokeswoman said . About an hour and a half later , it returned to the Hong Kong-Macau Ferry Terminal , where emergency crews rushed injured victims to hospitals , she said . At least 85 people were injured -- six seriously , according to Hong Kong 's Fire Services Department . There were 107 passengers and 10 crew members aboard the ferry at the time of the incident , officials said . It was not immediately clear what caused the crash . Last year , dozens of people were killed after two ferry boats collided in Hong Kong 's harbor .
At least 85 people are injured , 6 seriously . A high-speed ferry strikes an unknown object near Sunshine Island . It is not immediately clear what caused the crash .