Jeremy Corbyn has cancelled a trip to Oldham to campaign in a by-election amid a shadow cabinet revolt over airstrikes on Syria.
The Labour leader was due to travel to the Oldham West constituency on Friday to support Jim McMahon ahead of next week's by-election.
As recently as early on Thursday evening, Mr Corbyn tweeted that he was looking forward to the visit.
However, a spokeswoman for the Labour leader has now said: "Regrettably Jeremy Corbyn is not now visiting Oldham because matters to do with Syria mean he must return to London."
Mr Corbyn is at odds with top team after coming out and saying he could not back RAF air strikes against so-called Islamic State in Syria before the shadow cabinet had reached an agreed position on the issue.