A massive aquarium in a downtown Berlin hotel burst Friday, releasing 264,000 gallons of water, 1,500 fish and injuring two people, German authorities said. 

The spill in the lobby of the Radisson Blu caused a wave of debris to sweep the hotel shortly before 6 a.m. local time and rescue dogs are sweeping the area to make sure no one was caught under the wreckage. 

The tank was the world’s largest cylindrical aquarium and was dubbed the "AquaDom," which held 80 different types of tropical fish, including blue tang and clownfish – most of which are believed to have perished in the accident.

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"We have not yet been able to walk the first floor completely, which is probably where these fish will be," fire service spokesman Adrian Wentzel said. "But the thing is that the water has completely leaked out and these about 1,400 fish that were in this aquarium could not be saved either."

The exact cause of the incident remain unclear, though authorities believe it could be down to overnight freezing temperatures that may have caused a crack in the glass.

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The tank, which had become a tourist attraction with a 10-minute elevator ride through it, was modernized in 2020.

Some 300 guests staying at the Radisson Blu were forced to evacuate Friday morning. 

German lawmaker, Sandra Weeser, who was staying at the hotel described being woken up after hearing a loud bang, noting she thought there might have been an earthquake. 

"There are shards (of glass) everywhere. The furniture, everything has been flooded with water," she said. "It looks a bit like a war zone."

Emergency services are still on sight and Berlin police have assessed that so far they do not believe the tank was tampered with. 

U.S. Marine Corps veteran Robert Sundin, 70, was shot dead on Thursday morning when he came to the aid of a restaurant worker during an armed robbery in Vallejo, California. 

"He saved my life. That's the type of person he was. He saved my life. He's always going to be my guardian angel for life," said Teresa Brasher about Sundin, as reported by Fox 2.

Sundin, a married father who worked in the VA healthcare system, would arrive at Scotty's Restaurant at Tennessee and Tuolumne streets every weekday morning, at 5:30 a.m. 

Brasher noted, "God wasn't ready for me. But they had a place for Bob up there."

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On that fateful Thursday morning, Brasher noticed a man in a hoodie and ski mask riding an electric scooter.

She said, "He came up to my door, and he pointed his finger at me. He was pointing at my purse. I don't know if he used his finger or a gun."

At that point, Sundin, a Scotty's regular, exited his vehicle. 

Brasher continued, "The guy grabs him. And I can see Bob pulling away like that, and that's when I heard the gunshot go off."

Sundin was dead at the scene as the shooter fled. 

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Brasher added, "He's my hero. He'll always be my hero for life."

According to Fox 2, Sundin would sit in the same seat every morning, reading the newspaper and making small talk, while restaurant staff would cook up his regular order.

Scotty's owner, Nay Ung, said of Sundin, "That's what makes it hard. He was just such a wonderful man. It was just somebody you come across, and you feel comfortable talking to him."

Sundin was a volunteer at First Assembly of God, a Fairfield church. 

Pastor Eric Lura said, "If there was a need he saw at the church, he met it. He was the first person to arrive and last to leave."