A school graduate attacked schoolgirls with a knife at a secondary school in Başakşehir district of Türkiye's Istanbul city on October 5 morning.

The incident occurred at around 8:40 a.m. (GMT+3) at Sheikh Shamil Imam Hatip Middle School in the Kayasehir neighborhood, according to Sabah.

The 15-year-old school graduate reportedly put on a school uniform to pass through security checks without raising suspicion and entered the school carrying a kitchen knife.

She attacked and injured eight girls aged between 10 and 13. The motive for the attack has not yet been established.

The injured children received emergency medical treatment and were taken to hospitals. Three of the children are reported to be in serious condition.

The suspect was detained at the scene and taken into custody. Istanbul police and prosecutors have launched an investigation into the circumstances of the attack.