AFP's Berlin correspondent Deborah Cole says chancellor Angela Merkel has cancelled nearly all meetings for three weeks following a skiing accident.
Merkel fell while cross-country skiing during winter holiday, on crutches, cancelled nearly all meetings for 3 weeks @afp story to follow
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The Ukip leader confirmed he had "no prior warning" of Douglas Carswell's resignation from the party as he hit out at the "staunch Tory".
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.
The violence began after a counter-protester allegedly doused a female rally organiser with pepper spray.