(BSS/AFP) - Russia fired a wave of drones and missiles at Ukraine overnight, killing at least four people, Ukrainian officials said on Sunday.

The strikes came a day before Ukraine`s allies were set to meet in Paris for talks on pressuring Russia to end its more than four-year war.

Ukraine`s air defences have come under strain from repeated Russian ballistic missile strikes in recent weeks.

The United States this week gave Ukraine permission to build US-designed Patriot air defence systems capable of downing Russian ballistic missiles, but it may be months before they enter production.

Three people were killed in Russian attacks on Ukraine`s central Dnipropetrovsk region overnight, including two in a strike on an "industrial enterprise" in the city of Kryvyi Rig, regional officials said.

A separate drone attack on the southern city of Kherson killed a 48-year-old, mayor Yaroslav Shanko reported.