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

After some missed calls, President Joe Biden finally connected with the parents of Wall Street Journal reporter Evan Gershkovich, White House press secretary Karine Jean-Pierre confirmed Tuesday.

"He felt it was really important to connect with Evan's family," she told reporters on Air Force One as the president travels to Ireland.

Meanwhile, National Security Council spokesperson John Kirby said Gershkovich's detention is "pretty fresh" and officials are still trying to get consular access to Gershkovich, which they have not been able to do.

He would not get into any specific conversations the U.S. is having with Russians about releasing Gershkovich or if a prisoner swap is a possibility.

"I just want to make a couple of things clear that is, the determination of wrongful detention, it doesn't start the clock necessarily on communicating with the Russians about getting him released," Kirby said. "We're very early in this process here and I certainly, I think you can understand why I wouldn't talk about any discussions we might be having with the Russians about his release or Paul [Whelan]'s release. We certainly wouldn't do that."

Kirby said the administration is "certainly having discussions about what we can do to get him released."

"I don't want to go into details about these internal deliberations, having things out in the public sphere viscerally might actually make it harder to get Evan and Paul home, and that's what we're focused on," Kirby said.

-ABC News' Justin Gomez