Alarm signaled Friday afternoon (19/6) in Istanbul, as a subway derailed. So far there have been reports of three injured, who were taken to hospital.

According to anadolu, it is the M4 line that operates the routes between Kadiyoi and Sabiha Gökçe Airport. He derailed near Bostanji Station. Passengers came down by themselves from the wagons on the rails and walked through the tunnel to the station. Fire forces, medical care groups and the subway were rushed to the point.

| Kadıköy ile Sabiha Gökçen Havalimanı arasında sefer yapan metro, Bostancı'da raydan çıktı.

• Yolcular tahliye ediliyor. pic.twitter. com/jGkizHs2Lb— Boşuna Tıklama (@bosunatiklama) June 19, 2026

Cause of derailment reportedly to be one damage to track change mechanism.

The Istanbul subway announced that: "Because of technical failure on the M4 Kadiy-Airport Sabiha Gökçen, the routes take place between Maltepe stations and Sabiha Gökçen Airport".