A motorcyclist died early on Friday after being struck by a medium goods van on Tsing Sha Highway.
Police received a report at about 8.39am that a motorcyclist travelling towards Kowloon was hit just before entering Nam Wan Tunnel.
The rider was pronounced dead at the scene.
The 66-year-old van driver was arrested on suspicion of dangerous driving causing death.
Around an hour earlier, a five-vehicle collision occurred on Tsing Ma Bridge during the morning rush hour, with one car ending up on top of a taxi after being rear-ended.
The force was notified at around 7.36am of the crash involving four cars and a taxi on the airport-bound fast lane.
Police said three drivers were transported to Yan Chai Hospital after sustaining minor injuries in the chest, foot and neck.