Mechelen had some problems with some youth groups. There is no immediate threat if you stay in tourist areas, but certain neighborhoods are to be avoided at night.
The city used to have one of the highest crime rates of Flanders. Since 2003 the city is reviving again. Nowadays, it is safe to walk through Mechelen. The city has improved much over the last years. Don't worry, just enjoy!
contact
The city phone code for Mechelen is 015.