Police are appealing for information on a July 20 traffic accident in which a 73-year-old man was seriously injured and later died.

He was reportedly knocked down by a bus travelling westbound on Ngau Tau Kok Road near On Shin Road about 11.50am.

He was taken to United Christian Hospital and died August 1.

Witness should call Police on 2305 7571 or 2305 7500.