On the night of Thursday 16 to Friday 17 February, someone stuck something on the window of the salon. It later turned out that it was an explosive. The police then started an investigation. Several incidents also took place this year at another branch of the beauty salon on Amsterdamsestraatweg in Utrecht. This salon was shot at in February and an explosive device was placed on the sidewalk in May. It is still being investigated whether the suspect arrested today was also involved in these cases.