The former first minister was quizzed by detectives as part of their investigation into the SNP's finances.
Detectives have already quizzed her husband and the party's treasurer.
Even the deputy PM couldn't keep a straight face after his SNP gaffe.
Police are still investigating what happened to £660,000 raised from a previous crowdfunder.
It's the latest development in the ongoing crisis engulfing the party.
"People in in Scotland are being let down," Peter Kyle said.
Scottish first minister admits it is not "helpful" that the SNP treasurer has been arrested.
Detectives have also interviewed Nicola Sturgeon's husband as part of the probe.
Douglas Ross said people should vote "tactically" to keep out the SNP.
The former first minister asked for "privacy" following the arrest of her husband.