The son of renowned boxer Muhammad Ali was detained at a Florida airport over questions about his religion, a family friend has said. The episode has caused “Muhammad Ali Jr.” to trend on Twitter, with many users on the social media platform expressing outrage at his being profiled.

Lawyer Chris Mancini told the Courier-Journal, the main newspaper of Louisville, Kentucky, that Muhammad Ali Jr. and his mother Khalilah Camacho-Ali were detained shortly after arriving at Fort Lauderdale-Hollywood International Airport from Jamaica on February 7. They were returning to the States after attending a Black History Month event in Montego Bay.

Mancini said immigration officials questioned Ali Jr., who was born in Philadelphia and holds a U.S. passport, for almost two hours. They reportedly asked him, “Where did you get your name from?” and “Are you Muslim?” Mancini added that officials kept on questioning Ali Jr. even after he told them he was Muslim.

Camacho-Ali, meanwhile, was let go shortly after she was pulled aside after she showed immigration personnel a photo of herself with her ex-husband. Camacho-Ali was Ali’s second wife.

U.S. Customs and Border Protection said it could not discuss the incident when asked for comment. “Due to the restrictions of the Privacy Act, U.S. Customs and Border Protection cannot discuss individual travelers; however, all international travelers arriving in the U.S. are subject to CBP inspection,” a spokesperson told the Courier-Journal on Friday.

Mancini said that this was the first time either had ever been detained. “To the Ali family, it’s crystal clear that this is directly linked to Mr. Trump’s efforts to ban Muslims from the United Sates,” he said, in reference to the President’s now-blocked executive order that prohibited travelers from seven Muslim-majority countries from entering the U.S. for 90 days.

Muhammad Ali Jr. was one of Twitter’s top trending topics in the U.S. on Saturday morning, with many users airing anger over the situation:

Muhammad Ali Jr

Son of late boxing legend

Born in Philadelphia

Detained and question for two about his name But it's not a Muslim ban. — Neldy Germain (@neldygermain) February 25, 2017

Mem Fox, Muhammad Ali Jr. Who's next to be detained at the airport? Frederick Douglass? — (((Katha Pollitt))) (@KathaPollitt) February 25, 2017

https://twitter.com/RizzoCampbell/status/835527502978252800

Muhammad Ali jr, son of legendary boxer was interrogated for 2 h. By CBP"where is your name coming from". This is RACIAL PROFILING @GOP — Panna(Csopi)Benedek (@b_panna) February 25, 2017

Meanwhile, the Associated Press recently obtained a draft document by the Department of Homeland Security that says there is not enough evidence that citizens from the seven Muslim-majority countries singled out in Trump’s executive order pose a threat of terrorism. The department added that citizenship is an “unlikely indicator” of terrorism threats to the country.