Ali Abunimah, the executive director of the anti-Israel online publication The Electronic Intifada, was arrested by Swiss Police ahead of an event in Zurich, according to both the EI and Swiss news site NZZ.
Abunimah entered Switzerland on Friday, where he was questioned by police before being allowed to enter the country.
The EI then reported that American-Palestinian Abunimah was arrested a day later, at 2 p.m. on Saturday, and is currently being detained with access to legal counsel.