The public prosecution department wants to remand 30 Feyenoord fans arrested for rioting in Rotterdam in custody pending further investigation.
The department has asked the courts to extend their detention at a hearing on Wednesday. The 30, who range in age from 14 to 45, come from all over the country and face charges of attacking the police.
Rotterdam football club Feyenoord lost 3-0 to fellow Rotterdam side Excelsior on Sunday and so failed to win the Eredivisie title. More than 100 people were arrested in subsequent rioting in the city centre.
Feyenoord have a second chance to win the title this weekend, when they take on Heracles of Almelo.
Meanwhile, Rotterdam police have placed photographs of 10 more men they suspect of being involved in the riots online in an effort to have them identified.