Russia-Ukraine updates: Russian missiles hit close to nuclear reactors: IAEA director

Ukrainian forces hit and likely destroyed a Russian ammunition depot in the Russian-occupied town of Nova Kakhovka in the Kherson region on Monday night, local officials said.

The strike resulted in a massive blast, videos of which soon circulated online. According to local reports, more than 40 trucks filled with gasoline were destroyed. Russian media didn't verify the claims, saying instead that pro-Russian forces had destroyed a series of saltpeter warehouses.

“People's windows are blown out, but they are still happy ... because this means that the Ukrainian Armed Forces are close," Sergey Khlan, from the Kherson Regional Military Administration, said in the aftermath of the attack.

Monday's strike marked at least the fourth time Ukrainian forces destroyed ammunition depots in Nova Kakhovka, local media reported.

-ABC News' Edward Szekeres, Tatiana Rymarenko, Max Uzol and Yulia Drozd

Thirty-three people are confirmed dead from a missile strike on an apartment complex in eastern Ukraine’s Donetsk region.

The complex was reduced to rubble from multiple rocket strikes on Sunday.

Emergency workers said others might still be alive and trapped under the debris.

As Russia’s invasion of Ukraine continues, Russian President Vladimir Putin signed a decree on Monday that simplifies the procedure for any Ukrainian seeking Russian citizenship, allowing them to fast-track their applications, Russian news agency Interfax reported.

The fast-tracked citizenship applications previously only applied to residents of Ukraine's Donetsk and Luhansk regions.

Six people are dead and another 31 are injured from shelling in Kharkiv, according to the Kharkiv Prosecutor's Office.

Two children, ages 4 and 16, are among the injured.