AlHijjah 5, 1434, Oct 10, 2013, SPA -- Four young people have been stabbed at a vocational school in northern Finland, police said Thursday according to dpa. A 16-year-old male student from the Myllytulli school in the city of Oulu was arrested for the attack, public broadcaster YLE reported police as saying. The victims: three female students under the age of 20 and a school janitor in his 20s, have been taken to hospital and are reported to be in stable condition, YLE said. The motive was not known, but the suspect had been interviewed in February over alleged online threats, police said.