Police are investigating a fatal stabbing in Crystal Palace, south-east London. Multiple outlets report that a man in his 30s is stabbed and dies following the incident on a street in the area. One source says a second man, also believed to be in his 30s, is treated at the scene before being taken to hospital. The evening and national reports state that a suspect is arrested on suspicion of murder. According to the coverage, the arrested man is taken into police custody, and the police inquiry is underway to establish the circumstances leading to the death. The reports do not provide further details about the relationship between the individuals involved, the exact location, or the weapon used. The investigation continues as officers work to determine what happened and to trace any witnesses or relevant CCTV.