‘Several people held’ after teacher fatally stabbed in French school

Police forces cordon off the area near the Gambetta high school, seen in background, after a man armed with a knife killed a teacher and wounded three others in Arras, northern France (Michel Euler/AP/PA)

France’s national counterterrorism prosecutor has said that several people have been detained in an investigation into a school stabbing that left one teacher dead and three people wounded.

The attack happened at a school in Arras in northern France.