CCTV footage has been released appearing to show that Jeremy Corbyn walked past empty train seats before he was filmed sitting on the floor and complaining about the "completely ram-packed" carriages.
The Labour leader was travelling on the three-hour Virgin Trains service from London to Newcastle on August 11.
ICYMI, a video emerged last week which showed Corbyn sitting on the floor, reading a newspaper, and saying "This is a problem that many passengers face every day" before calling for public ownership of the railways.
-- Liam Young (@liamyoung) August 16, 2016
But Virgin Trains has released these CCTV images which appear to show him and his team walking past empty, unreserved seats before the filming began.
The train operator also says the footage shows Corbyn sitting down in an empty seat more than two hours before reaching Newcastle.
A Virgin Trains spokesman said: "We have to take issue with the idea that Mr Corbyn wasn't able to be seated on the service, as this clearly wasn't the case.
"We'd encourage Jeremy to book ahead next time he travels with us - both to reserve a seat and to ensure he gets our lowest fares - and we look forward to welcoming him on board again."
In case you're wondering, Corbyn was on his way to debate with Owen Smith in a Labour leadership hustings in Gateshead.
And some people on Twitter think the whole thing - now becoming known as #seatgate - is all just a bit awkward really...
When you realise Virgin Trains have CCTV on them. pic.twitter.com/lI1A2kcDV2
-- Ben Rathe (@benrathe) August 23, 2016
BREAKING: Virgin Trains announces extra fire extinguishers on trains next time Corbyn travels with them in order to deal with his pants.
-- Dan Fox (@d4nf0x) August 23, 2016
-- Scott Alexander (@AnAngryScott) August 23, 2016
-- George Chambers (@geocham) August 23, 2016
Oh, and billionaire Sir Richard Branson (who of course co-owns Virgin Trains with Stagecoach) even posted a link to the CCTV images from his own Twitter account.
-- Richard Branson (@richardbranson) August 23, 2016
However, there are some people sticking up for Corbyn. They're pointing out that most of the seats in the picture look to be reserved, so he maybe couldn't have sat in them anyway...
-- James Foster (@JamesEFoster) August 23, 2016
Everyone is showing photos of Corbyn walking past *reserved* seats and sitting later in journey. Show the one that actually incriminates.
-- Robert Morgan (@robcmorgan) August 23, 2016