An armed attack has been reported at Gymnasium No. 16 in Ufa, Russia.

The attacker was identified as a ninth-grade pupil armed with a traumatic (non-lethal) pistol. The pupil entered the school during the third lesson and opened fire at a teacher, The Caspian Post reports via Russian media.

Preliminary information indicates the teacher was wounded. The ninth-grader has been detained by law enforcement.

Authorities are continuing to clarify the circumstances of the incident, while emergency services and investigators are working at the scene.