The arrest is deeply embarrassing for the SNP, which has dominated Scottish politics for most of the last two decades. Sturgeon stood down earlier this year and support for the party and its aim of independence has since dropped. "Nicola Sturgeon has today, Sunday 11th June, by arrangement with Police Scotland, attended an interview where she was to be arrested and questioned," a spokesperson for Sturgeon said. Opposition parties have accused the SNP of being mired in scandal and too focused on independence to govern Scotland properly. The Labour Party's Scotland spokesperson Ian Murray said there was a culture of "secrecy and cover-up" in the SNP.

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Persons: Nicola Sturgeon, Peter Summers, Sturgeon, Nicola, Sturgeon's, Peter Murrell, Colin Beattie, Murrell, Beattie, Scots, Ian Murray, Humza Yousaf, Westminster, YouGov, party's, Yousaf, Kylie MacLellan, Andrew MacAskill, Alistair Smout, Alex Richardson, Frances Kerry, Sharon Singleton Organizations: NHS, Treatment, Labour LONDON, Scottish First, Scottish National Party, Scottish, Police Scotland, Twitter, Police, Scotland's, England, Conservative, Labour Party's, Scotland, Labour, Thomson Locations: KIRKCALDY, SCOTLAND, NHS Fife, Kirkcaldy, Scotland, Scottish, Glasgow, Westminster