According to AFP, the police were in the process of stopping a "suspect" who was near their official car when "an explosive device was detonated."
The incident occurred near the site where a Russian general was killed in an attack earlier this week.
There is still no information about who is behind the explosion.
Since Russia attacked Ukraine in February 2022, Kyiv has been accused several times of being behind attacks against Russian military personnel and Kremlin loyalists, both within Russia and in the occupied parts of Ukraine.
Ukraine has claimed responsibility for a couple of the attacks, but has not commented on last night's explosion.
