Iran seized a prominent British-Iranian scholar during his visit there this month, a rights group said Wednesday, an arrest that may further stoke tensions with the West over President Trump’s threat to scrap the 2015 nuclear accord.

The scholar, Abbas Edalat, an award-winning professor of computer science and mathematics at the Imperial College of London, is at least the third British-Iranian dual citizen to be incarcerated by the Tehran authorities in recent years.

The group that reported Mr. Edalat’s arrest, the Center for Human Rights in Iran, said members of the Islamic Revolutionary Guards Corps took him into custody on April 15 while he was in Tehran to visit his family and attend an academic workshop. The group said the professor’s computer, CDs and notebooks were impounded.

“Iran’s continued arbitrary arrests of dual nationals without transparency and lack of due process is extremely concerning,” Hadi Ghaemi, the group’s executive director, said in a statement.