Explosions heard in cities across Ukraine amid wave of Russian strikes.

Explosions were heard in Kyiv, Zaporizhzhia, Dnipro, Kharkiv, Odesa, and Lviv in the early morning of Dec.

29, according to local reports. Russia unleashed a barrage of attack drones and missiles overnight, targeting regions across Ukraine. In Lviv, multiple explosions were heard by Kyiv Independent reporters at 8:20 a.m. local time.

Lviv Mayor Andriy Sadoviy said that according to preliminary information, more than 10 Shahed drones attacked Lviv Oblast. Other regions in western Ukraine, including Khmelnytskyi, Rivne and Lutsk, which borders Poland, also had air raid alerts. The Kyiv City Military Administration reported falling debris in at least two districts of Kyiv as of 8:20 a.m. local time.

The building of the Lukianivska metro station was damaged by an explosion. The city authorities also reported a fire on the premises of a warehouse in Kyiv, while in Dnipro, local reports said a shopping center was on fire. Sadoviy reported a fire at a "critical infrastructure facility" in Lviv.

Kharkiv Governor Oleh Syniehubov reported as of 6:20 a.m., the city of Kharkiv had been hit by 10 Russian strikes overnight. The air raid alert sounded again shortly before 8:00 a.m.

Explosions heard in Kyiv, mayor urges residents to take shelter Explosions were heard in Kyiv on Dec.

29 as Mayor Vitali Klitschko urged residents to take shelter.