Ukip leadership favourite Steven Woolfe is in a "serious" condition in hospital after an altercation at a meeting of the party's MEPs, Nigel Farage has said.
A statement from Ukip's interim leader said: "I deeply regret that following an altercation that took place at a meeting of Ukip MEPs this morning that Steven Woolfe subsequently collapsed and was taken to hospital. His condition is serious."
A party spokesman said Woolfe was "taken suddenly ill" in the European Parliament building in Strasbourg on Thursday morning, adding: "He has been taken to hospital in the city and he is undergoing tests."
Ukip MEPs have been tweeting their thoughts for Woolfe, and Raheem Kassam - who is also standing as a candidate for the party's leadership following Diane James' resignation on Tuesday - has cancelled a TV appearance.
MEP Patrick O'Flynn declined to discuss the incident, adding: "My thoughts and prayers are with Steven and I'm desperately, anxiously waiting to hear further news."