The journalist was shot dead near the entrance of his house. Anton Gerashchenko, the interior minister's adviser, has confirmed the information on his Facebook page.
Putin says recent murders of regime opponents in Ukraine — including Oles Buzina, killed minutes ago — show Ukraine's not becoming European.— max seddon (@maxseddon) April 16, 2015
The incident occured at 1:20 pm local time (11:20 am GMT) in Shevchenko district of the Ukrainian capital.
Investigative team works on the site.
Oles Buzina was an opposition journalist, writer and TV host, well-known for his criticism of Poroshenko's goverment.
On Wednesday, Oleh Kalashnikov, a Ukrainian MP and a member of the Party of Regions, was killed near his residence in Kiev.