eight pupils and a security guard have been killed in a school shooting in the serbian capital, belgrade. police have confirmed that the gunman a pupil at the school has been arrested. six more young students and the history professor are seriously injured. police say they are investigating the suspect s motives. mass shootings are rare in serbia, which has very strict gun laws. live now to our reporter aleksandar miladinovic who is in belgrade. tell us more about what has happened there? 50 tell us more about what has happened there? ., ., ., ., , tell us more about what has happened there? ., ., ., ., there? so for no that ate very young students of there? so for no that ate very young students of primary there? so for no that ate very young students of primary school- there? so for no that ate very young students of primary school age - there? so for no that ate very young students of primary school age in i students of primary school age in one of the most prestigious prima