In the morning of 18 September 2019, Dutch lawyer Derk Wiersum was shot and killed near his home in Amsterdam. At the time of his death, Wiersum was a lawyer for state witness Nabil B. in the Marengo case against the so-called 'Mocro Maffia' led by Ridouan Taghi. The murder caused a great shock in the world of lawyers; it was called "an attack on the rule of law".