Heavily armed police officers are stationed in front of the Haarlem city hall. This is for the security of mayor Jos Wienen, who was threatened, the Public Prosecutor said, according to RTL Nieuws.
"There were reports that there was a threat and that is why we took security measures", the Public Prosecutor said. "This has been happening since the start of September." Extra security measures were also taken at Wienen's home some time ago.