George Santos' ex-campaign treasurer Nancy Marks likely to plead guilty. Here's what we know so far

Washington — A former campaign aide to Rep. George Santos, Republican of New York, was arrested and charged on Thursday with felony charges in New York, according to court documents obtained by CBS News. 

Nancy Marks — who worked for the embattled New York congressman as campaign treasurer — is set to appear in New York federal court Thursday afternoon. She was charged via federal criminal information, an indication that she intends to enter a plea agreement with prosecutors.

As Santos' campaign treasurer, Marks signed off on his expenses related to the 2022 election, which included this unusual spending pattern: 37 charges of $199.99, one cent below the threshold that requires an invoice or receipt.