Deadly bomb blast hits rally in Ukraine
First entry: 22 February 2015
The device exploded at 11:20 GMT as people gathered near the city's Palace of Sport for a march in support of national unity, Ukrainian media said.
At least one police officer was killed, the interior ministry said.
Kharkiv lies outside the conflict zone in eastern Ukraine, where a ceasefire appears finally to be taking hold.
The government and rebels there have agreed to start pulling back heavy weapons from the frontline, with the actual withdrawal expected to get under way on Tuesday.
The process will not be completed until at least 8 March, five days later than the deadline set at peace talks in Minsk this month.