The SNP's auditors quit
Johnston Carmichael say they're reviewing their portfolio of clients
The firm tasked with auditing the SNP's accounts has resigned.
Accountancy firm Johnston Carmichael claim it's because they are reviewing their client portfolio.
Earlier this week, former chief executive Peter Murrell, who is Nicola Sturgeon's husband, was arrested by police investigating the SNP's finances.
He was later released without charge pending further investigation.
The party's treasurer is now looking for another firm to audit the party's finances.
READ MORE: Peter Murrell arrested in connection with Police SNP investigation.
An SNP spokesman said: "We can confirm that Johnston Carmichael will not be providing audit services to the SNP this year.
"The national treasurer is undertaking a tendering process for alternative provision and we have advised the Electoral Commission of that position."
Johnston Carmichael had worked with the party for more than a decade.
Large political parties are required to submit independently-audited accounts to the Electoral Commission each year.
READ MORE: Peter Murrell released from custody.
The decision means the SNP now have until the first week of July to present their accounts or face possible sanctions, including an independent audit.
On Thursday, new SNP leader Humza Yousaf said it was "very, very clear that the governance of the party was not as it should be".
He has promised a review of governance and transparency with external input, which will be discussed at a meeting of the party's national executive committee later this month.
Conservative MSP Donald Cameron said: "This resignation only raises further questions about the increasingly murky picture surrounding the SNP's finances."