MOBILE, Alabama – Two more former mortgage broker employees accused of defrauding lenders pleaded not guilty to federal charges Wednesday, bringing the total number of defendants in the probe to a half-dozen.

Prosecutors allege that employees who worked at Midtown Mortgage submitted fraudulent documents to the lenders in order to obtain mortgages for customers who otherwise would not qualify.

Two of the defendants, Anthony Melvin Wilkes and Delaine Williams, already have pleaded guilty and await sentencing.