The last line that fed the Zaporizhzhia nuclear plant has been damaged following missile strikes, and the plant is now working on diesel generators, according to the Ukrainian energy minister, Herman Galushchenko.

-ABC News' Will Gretsky

DTEK, the largest private grid operator in Ukraine, said emergency power outages are in effect due to the missile attacks in the Kyiv, Odesa, Mykolaiv and Dnipro regions.

-ABC News' Will Gretsky

Multiple explosions have been reported in city centers all over the country, including Dnipro, Odesa, Kyiv, Zaporizhzhia, Vinnytsia, Khmelnytskyi and Kharkiv.

Residents in multiple areas are being asked to shelter in place, and communication and electricity has been impacted.

Kyiv Mayor Vitali Klitschko said multiple explosions were reported in the Holosiiv district.

The governor of Kharkiv, Oleh Syniehubov, said Russia struck the city at least 15 times overnight.

The head of the Odesa Regional Military Administration said there had been no casualties and that the power supply is being restricted.

-ABC News' Will Gretsky

Ukrainian Defense Minister Oleksiy Reznikov denied Ukraine was involved in the bombing of the Nord Stream pipeline, which carries natural gas from Russia to Germany. While the pipeline was not active at the time of the bombing last September, it was filled with fuel.

The denial comes after The New York Times reported that intelligence reviewed by U.S. officials suggests a pro-Ukrainian group carried out the Nord Stream bombings last year.

After the story broke, German Defense Minister Boris Pistorius warned against “jumping to conclusions” about who carried out the explosion, suggesting it could have been a “false flag” operation to blame Ukraine.

German authorities were reportedly able to identify the boat used for the sabotage operation, saying a group of five men and one woman using forged passports rented a yacht from a Poland-based company owned by Ukrainian citizens. The nationalities of the perpetrators are unclear, according to a separate report by Germany’s ARD broadcaster and Zeit newspaper.

“We have to make a clear distinction whether it was a Ukrainian group, whether it may have happened at Ukrainian orders, or a pro-Ukrainian group [acting] without knowledge of the government. But I am warning against jumping to conclusions,” Pistorius said on the sidelines of a summit in Stockholm.

A Russian diplomat said Russia has no faith in the U.S.‘s “impartiality” in the conclusions made from intelligence.

-ABC News’ Ellie Kaufman

The United States announced an additional $2 billion military aid package for Ukraine on Friday, as the Eastern European country marks the one-year anniversary of Russia's full-scale invasion.

The new aid package includes more missiles for Ukraine's U.S.-supplied High Mobility Artillery Rocket Systems (HIMARS), additional 155mm artillery ammunition, more Switchblade one-way drones and other military equipment, according to the U.S. Department of Defense.

"One year into a war of aggression waged by a permanent member of the U.N. Security Council, our allies and partners worldwide stand united and resolute," U.S. Secretary of Defense Lloyd Austin said in a statement. "Putin's reckless, illegal war is not just an all-out assault on Ukraine's sovereignty and a historic threat to European security. It is also a direct attack on the system of rules, institutions, and laws that the world built at such great cost after World War II -- a system that rejects aggression and respects the rights of all countries, big and small."

The additional aid is being provided under the Ukraine Security Assistance Initiative (USAI) plan, meaning this equipment and artillery have to be made from scratch before being delivered, which will take time. This is different from the other aid packages that come from existing U.S. military stockpiles and get delivered faster.

With the new aid package, the Biden administration has now provided $31.8 billion in assistance to Ukraine since Russia's war began on Feb. 24, 2022.

"Putin thought that Ukraine’s defenses would collapse, that America's resolve would falter, and that the world would look the other way. He was wrong," Lloyd said. "One year later, Ukraine's brave defenders have not wavered, and neither has our commitment to support them for as long as it takes. Despite the Kremlin's campaign of cruelty, the people of Ukraine have shown stunning bravery, skill, and fortitude. Today and every day, we stand by the courageous Ukrainians fighting to defend their country, and we mourn with those who have lost their loved ones in Moscow's monstrous and unnecessary war."

"Difficult times may lie ahead, but let us remain clear-eyed about what is at stake in Ukraine," he added. "And let us remain united in purpose and in action -- and steadfast in our commitment to ensure that a world of rules and rights is not replaced by one of tyranny and turmoil."

-ABC News' Luis Martinez