Nicola Sturgeon made her final appearance as Scotland's first minister in the Scottish Parliament in March
"A 52-year-old woman has today... been arrested as a suspect in connection with the ongoing investigation into the funding and finances of the Scottish National Party," Police Scotland said in a statement, with British media confirming her identity as Sturgeon.It is the third arrest in the probe, which is sending shockwaves through Scotland's political system.
Murrell has long faced questions over the alleged diversion of £600,000 in SNP donations that were meant to support its drive for Scottish independence.