Washington Post has more.

The petitions were being collected for a group seeking to change Arlington County government’s form.  It was a coalition of firefighters, Green Party and Republican Party members.  The person who collected more than a third of the signatures was a convicted felon, ineligible to do so.  More from another Washington Post story:

“Then Lindberg found that Cheryl Simmons, a felon and therefore not a registered voter by Virginia law, had collected the third-most signatures for the group.  Simmons was convicted in 2006 of felony embezzlement, having given friends and family members discounts at the Hecht’s department store where she worked, police said.”