(Reuters) -At least two people were killed and two wounded in an attack on Kyiv on Wednesday morning, Mayor Vitali Klitschko wrote on the Telegram messaging app, as debris from targets destroyed by air defences fell on several buildings in the Ukrainian capital.

The bodies of two people were found in a nonresidential building and one person was wounded by glass shards, Klitschko said, adding that debris fell in four places in the capital.

"Kyiv has not experienced such a powerful attack since spring. The enemy launched a massive, combined attack using drones and missiles," Serhiy Popko, the head of the city's military administration said on Telegram

He said that at the beginning several groups of drones were heading for Kyiv from different directions. Russia then launched missiles from Tu-95 strategic aircrafts.

"All in all, the air defence forces destroyed more than 20 enemy targets," Popko said.

Kyiv authorities said several buildings were damaged by debris while officials in Kyiv region reported that several houses were damaged by missile fragments.

(Reporting by Pavel Polityuk; Editing by Jacqueline Wong and Michael Perry)