Police in the Dutch city of Amsterdam say several cars have been set on fire in the sixth night of unrest after officers shot a Moroccan man dead.
The 22-year old was killed after entering a police station where he stabbed two police officers.
Eleven cars have been set on fire this week in the Slotervaart district of Amsterdam, which is mainly populated by immigrants.
Police said that a group of about 35 young people were behind the trouble.
"There is a lot of police in the streets. This is the work of a few who take advantage of the situation," said a spokesman.
The dead Moroccan man, identified as Bilal B, had been receiving treatment for psychiatric problems.
He had been questioned over contact with Islamic extremists who were linked to the murder of film maker Theo van Gogh in 2004.
About 1m of the Netherlands' 16m population are Muslims.
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