OKLAHOMA CITY (AP) — Citing concerns about an attempt by a Muslim organization to replace the U.S. Constitution with Islamic law, several Republican Oklahoma legislators have announced the creation of a counterterrorism caucus.

Republican state Rep. John Bennett of Sallisaw spearheaded a news conference on Thursday announcing the formation of the caucus.

Although Bennett described the group as bipartisan, no Democrats attended the news conference. The one Democratic representative Bennett cited as a member, Rep. Eric Proctor of Tulsa, said he was unsure of the purpose of the caucus.

A U.S. Marine Corps veteran who served in Afghanistan and Iraq, Bennett says he's primarily concerned with the possibility of the Muslim Brotherhood operating in Oklahoma. He also criticized the Council on American-Islamic Affairs, an advocacy group with an Oklahoma chapter.