A policeman was killed as a fellow policeman opened fire at him while performing duty in the capital's Baridhara late on Saturday night.
The incident took place in front of the Palestinian Embassy in Dhaka.
Another pedestrian was injured in the incident, said Mazarul Islam, officer-in-charge (OC) of Gulshan Police Station.
The identity of the victim is yet to be confirmed.
"We heard the news and are heading towards the spot," said the OC, adding that the details will be known later.
Bd pratidin English/Lutful Hoque
