Russia and Ukraine exchanged hundreds more prisoners Saturday as part of a major swap that amounted to a rare moment of cooperation in otherwise failed efforts to reach a ceasefire.

A recent Russian drone and missile attack on Kyiv and other Ukrainian regions has intensified. This follows a rare prisoner swap between Russia and Ukraine, which exchanged a total of 1,000 detainees.

(Reuters) -Fragments from a Russian drone triggered a fire and caused damage to an apartment building in the Ukrainian capital Kyiv early on Sunday, a senior Ukrainian official said. Timur Tkachenko, head of the capital's military administration, said the incident occurred in the Holosiivskyi district, just outside the city centre.

The large-scale attack occurred on the third day of a planned prisoner swap between Russia and Ukraine, the only tangible outcome from peace talks in Istanbul earlier this month, which have so far failed to produce a ceasefire.

Footage captured the moment a Ukrainian Himars rocket launcher was destroyed by an elite Russian drone unit just 10km (six miles) from the front line last month.