A photo of former Vice President Joe BidenJoe BidenThe Hill's Morning Report - Pelosi remains firm despite new impeachment push Democrats sense new momentum in Trump tax return fight Chimamanda Ngozi Adichie becomes first African to deliver Yale graduation speech MORE sitting casually on an Amtrak train just hours after announcing his 2020 presidential campaign is making the rounds on social media.

Biden, a known Amtrak traveler, can be seen sitting near aides on a train as they headed to New York, according to tweets shared by BBC North America bureau chief Paul Danahar.

Danahar said the image was taken just hours after Biden's campaign released a video online of the former vice president announcing his White House bid, ending months of speculation. Danahar confirmed to The Hill that Biden was on an Amtrak train.

The tweet has already racked up more than 500 likes in less than hour and garnered reactions from many online.

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Biden, who often takes Amtrak from Wilmington, Del., went viral after he was photographed bumping into Sen. Kamala HarrisKamala Devi HarrisThe Hill's Morning Report - Pelosi remains firm despite new impeachment push Biden says Congress must move to protect abortion rights Harris seeks Iowa edge with army of volunteers MORE (D-Calif.) on the train back in February.

The former vice president and longtime senator, nicknamed "Amtrak Joe," has used the train to commute from Delaware, where he lives, to Washington for decades.