CHARLOTTE, N.C. - Channel 9 has learned that the criminal investigation into former Charlotte Mayor Patrick Cannon has expanded.
The U.S. Attorney's Office has requested thousands of documents from Mecklenburg County, according to the county attorney, Marvin Bethune.
Bethune said his law firm received the federal subpoena on Friday afternoon, when county offices were closed for the holiday weekend.
Bethune said county staff met Monday to discuss the subpoena. He would not reveal specifics but said it included a request for a broad range of documents.
On Tuesday, county staff began the process of gathering all of those documents, but they haven't yet given a timeline for when that process will be complete.
Several county and city officials have been questioned by FBI agents since Patrick Cannon's arrest March 26 on charges he accepted bribes.
Cannon remains free on a $25,000 bond. The next step in his case would be a grand jury hearing.