Police have arrested four men suspected of threatening to kill Breda mayor Paul Depla, after a photograph found on a football supporter’s phone revealed new evidence for a case that had stalled. A banner bearing the words “Depla Dood” (Depla dead) was hung on the front of a café in the city’s Meidoornstraat on March 8, when NAC Breda played Feyenoord. Depla reported the threat to the police, but in May prosecutors said the case had halted because the suspects could not be linked to the banner. A breakthrough came when several NAC supporters were arrested over rioting around the club’s match against Heerenveen on May 10 and their phones were seized, police said. The four – three from Breda, aged 16, 32 and 34, and a 24-year-old from Oosterhout – were arrested on Thursday and will be questioned.