Maryland police are investigating after dozens of fliers promoting the Ku Klux Klan were found in a neighborhood.

The Capital Gazette reports that a dog-walker first reported the 30 to 40 fliers on Saturday in people's front yards in Glen Burnie.

Anne Arundel County Police described the fliers as KKK propaganda.

Police spokesman Lt. Ryan Frashure said the flier's contents are highly offensive but may be covered under freedom of speech protections.

Still, police are examining surveillance video in an attempt to discover the source.

This isn't the first time such fliers have been reported in the D.C. area. Since January, a number of KKK fliers have been posted around Loudoun County, Virginia.