SNP MSP Christine Grahame has been censured by parliamentary authorities after she was found to have misused Holyrood resources during her election campaign.

Last night the Crown Office said it was considering whether any action would be taken against the convener of Holyrood's Justice Committee following an investigation by the Scottish Parliamentary Corporate Body.

Meanwhile, The Herald can reveal the Presiding Officer has written to Ms Grahame on behalf of the Corporate Body (SPCB) "conveying its strong disapproval" about her misuse of resources.

According to the SPCB, Ms Grahame breached the reimbursement of members' expenses scheme and the code of conduct for MSPs.

It did not uphold all the allegations made by her former employee, Mark Hirst, but found three emails indicated a misuse of resources.

A letter from the SPCB stated the emails "relate to significant party political activity which should not have been conducted using parliamentary resources". It went on: "On behalf of the SPCB, the Presiding Officer has written to Ms Grahame conveying its strong disapproval that she has misused parliamentary resources in this way and asking her to ensure that no further misuse of resource occurs."

Last night Ms Grahame put out a statement saying she was pleased the SPCB was taking no further action. However, the matter is now under consideration by the Crown Office and Lothian and Borders Police.

Earlier this year the Electoral Commission looked at the allegation but did not conduct what it calls a formal investigation. It referred some of the claims to the Crown Office.

The Standards Commissioner looked at Mr Hirst's allegations on November 8 and referred the allegations to the SPCB.

The Crown Office said: "Our Serious and Organised Crime Division has received information from the Electoral Commission in relation to a 67-year-old woman. The information remains under consideration."