Dutch military authorities arrested 21 fifth columnists. Premier De Geer said they were dangerous to the peace and security of the NL. Nazi Chief Anton Adrian Mussert was not arrested.

After watching their fifth column’s maneuvers for three weeks (TIME, May 6 et ante), Dutch military authorities last week swooped down on suspect strongholds in The Hague, Haarlem, Amsterdam. They carted away and interned 21 Nazis, Communists, etc., including National Socialist Party Editor M. M. Rost van Tonninggen, member of…