The Arkansas Department of Finance and Administration (DFA) warned owners of fantasy-sports betting sites Underdog Fantasy and PrizePicks against operating in the state.

Driving the news: DFA officials believe the two online gaming sites are offering unlicensed sports betting in violation of a section of the Arkansas Constitution. The agency has sent cease-and-desist letters to both companies.

“Fantasy sports operators offer a version of the traditional fantasy football concept with a consumer creating a team and points being assigned based on performance. The consumer creating the best-performing team is rewarded,” DFA said in a news release.