A photo of former Vice President Joe BidenJoe BidenPoll: Biden leads 2020 Democratic field by 15 points, followed by Sanders and Warren Booker takes swipe at Biden criminal justice reform plan Panel: Has Joe Biden been wrong on everything for 40 years? 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 HarrisPoll: Biden leads 2020 Democratic field by 15 points, followed by Sanders and Warren Democrats, advocacy groups urge Pompeo to abolish new 'unalienable rights' commission Biden announces plan to counteract mass incarceration 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.