Week after rail sabotage, perpetrators are still without a trace, ProRail calls for surveillance drones

A week after the major rail sabotage on Prinsjesdag, not much is clear about the perpetrators. The police and Public Prosecutor's Office make no statements about the ongoing investigation and no one has claimed the action. Rail operator ProRail thinks that drones could help to increase the chance of being caught in the future. ProRail has about 300 cameras at level crossings and another 6000 at stations.