OKLAHOMA CITY — An Army reservist from Tulsa asked to leave a gun range after identifying himself as a Muslim sued the owners Wednesday, the latest in a series of cases across the nation alleging anti-Islamic discrimination.

The lawsuit on behalf of 29-year-old Raja’ee Fatihah, an employee of the Oklahoma Department of Human Services, was filed in U.S. District Court in Muskogee against the owners of Save Yourself Survival and Tactical Gun Range in Oktaha. A sign posted at the range declared it a “Muslim-free” establishment. Similar signs have been placed at businesses in Florida, Arkansas, Kentucky and New York, said Brady Henderson, legal director for the Oklahoma chapter of the American Civil Liberties Union, which filed the suit.

“Whether the sign in question says ‘no Muslims’ or whether it says ‘no coloreds’ or whether it says ‘no women’ or ‘no Christians’ or ‘no Buddhists’ … it is just as un-American and fundamentally it is just as wrong,” Henderson said.

Fatihah, who is a board member with the Muslim advocacy group Council on American-Islamic Relations’ Oklahoma chapter, said he went to the gun range after learning about the sign. He said the owners of the store were pleasant and welcoming until he told them he was Muslim.

“At that point, they started treating me with suspicion,” Fatihah said.

CAIR filed a similar suit last year against a gun shop in Florida, but that case was dismissed by a federal judge who determined CAIR could not prove its members were harmed by the store’s policy, Henderson said.

Robert Muise, with the American Freedom Law Center, represented the Florida gun shop owner and now is working for Chad Neal, the owner of the Oklahoma gun range.

Muise said Fatihah was denied service because he was belligerent, not because of his religion, and that the sign declaring the shop a “Muslim-free” business is protected free speech.

“The only thing the law prohibits is if somebody denies services strictly on the basis of religion, and that didn’t happen here,” Muise said.

Fatihah denies that he acted belligerently.

Claims of discrimination by business owners against Muslims have been reported in numerous states, and formal complaints have been filed with the U.S. Department of Justice regarding incidents.