Police used water cannon, dogs, and mounted officers to disperse a protest in central Amsterdam on Sunday afternoon, witnesses said. Nearly 200 people, some of them throwing stones and fireworks, were detained in the city, police said.
National broadcaster NOS said riot police had been deployed in at least 10 cities and towns after a curfew went into effect at 9 p.m. (20:00 GMT). Vehicles were set alight, police were pelted with stones, and public property was destroyed, it reported.
Military police said on Twitter on Sunday night that they were supporting local police in at least two cities in the south.
Images on Dutch television showed bands of youths looting shops, throwing bicycles, and setting fires in the southern city of Eindhoven. At least 55 people were arrested in Eindhoven, the city said in a statement.