MP Natalie McGarry has been charged by police over fraud allegations.
It is understood the alleged offences are linked to her involvement with the group Women for Independence, which was set up in the run-up to the 2014 Scottish referendum, and with the SNP's Glasgow Regional Association.
The amount of money allegedly involved is a five-figure sum, according to sources.
A Police Scotland spokeswoman said: "On Tuesday September 27, a 35-year-old woman was charged in connection with alleged fraud offences.
"A report will be sent to the procurator fiscal."