OKLAHOMA CITY — An Army reservist from Tulsa who was asked to leave a gun range in eastern Oklahoma 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 with the Oklahoma Department of Human Services, was filed in US District Court in Muskogee against the owners of Save Yourself Survival and Tactical Gun Range in the small town of Oktaha.

A sign posted on the business declared the range a ‘‘Muslim-free’’ establishment, and is similar to signs that have been placed at businesses in Florida, Arkansas, Kentucky, and New York, said Brady Henderson, the legal director of the Oklahoma chapter of the American Civil Liberties Union, which filed the suit.

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.

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

Muise said that 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.

Fatihah denies that he acted belligerently.

Associated Press