Last year the Dutch police again received more reports about disturbed people causing problems, the police confirmed to ANP. Nearly 75 thousand reports were received, compared to about 66 thousand in 2015. Since 2012 the number of reports about disturbed problem causers increased by an average of 14 percent per year.

"We have the impression that the severity of the incidents is increasing. This has an impact on the environment and requires a lot of police on the street", Amsterdam police chief Pieter-Jaap Allbersberg said to ANP.

The term "disturbed" covers a wide range of people in police reports, ranging from drunks to people with actual psychiatric problems.