BIRMINGHAM, Alabama -- Jefferson County has fired a revenue department employee who appeared to accept money to move a customer to the front of a car tag line, County Manager Tony Petelos said late today.

"An internal investigation is underway," Petelos said. "Because this was a personnel matter, there will be no further comment."

The worker was not identified.

The employee was caught by Fox 6 taking money from a customer who was then moved ahead of other people waiting for services at the downtown Jefferson County Courthouse. The report aired Tuesday night on Fox 6.

The wait time for car tags has lasted up to four hours for some resident and sometimes spills out of the courthouse doors. To speed the wait time revenue department employees often check with customers in line to make sure they have the proper paperwork needed for car tags and other motor vehicle services.

Those lines have increased since the beginning of the year and left county officials looking for ways to shorten the wait time.

It's unclear whether charges will be filed.

County commissioners said today the matter was an "isolated" incident and referred questions to Petelos, who has responsibility for all county departments.

"We're doing an investigation to determine exactly what happened, and then we will look to see what we can do to improve the situation in the revenue department," Petelos said in an earlier interview. "It's an isolated incident as far as the revenue department."