Police have surrounded the campus after a group of gunmen entered the university compound, Interior Ministry spokesperson Tariq Arian said.
Sources told TOLOnews that there were three attackers. According to the report, an explosion and gunfire occurred when Afghan and Iranian officials were opening a book exhibition.
The outlet posted photos of students being evacuated from the campus.
A video from the scene shows people hastily walking down the street and fleeing in panic as loud bangs are being heard.
Earlier in the morning, a bomb exploded in Kabul, wounding a security serviceman and a civilian.
Last week, an SUV rigged with explosives blew up in a different part of the city, injuring three civilians.