Amsterdam police have arrested the 29-year-old spokesman for radical Islamic group Sharia4Holland for making threats against MP Geert Wilders.
In an impromptu press conference on Dam square in Amsterdam on Friday, the man likened Wilders to a Roman dog and warned him to learn the lesson of what happened to Theo van Gogh. Van Gog was killed by an Islamic militant.
The arrest followed a formal complaint by Wilders and critical comments from politicians.
Sharia4Holland, an offshoot of Sharia4Belgium, is said to have handful of members in the Netherlands.