HARRISON, AR – An international hacking group has made threats against an Arkansas town after a controversial billboard went up recently. 

The billboard in the city of  Harrison is sponsored by the KKK. After a story ran on CNN  Tuesday, a person claiming to be apart of the  group “anonymous”  told the Harrison dispatch,”Stop racism in a week– or we will.”

Harrison’s mayor says authorities are investigating and residents should not worry.

Police are warning those  to make sure the security on their computers are up to date and to keep private information off the web.