The police have arrested the father of 21-year-old Uros Blazic, who committed the massacre with 8 dead and 14 injured a few days ago in Belgrade. 

Serbian media report that the police, after checking the 55-year-old's apartment, found an arsenal of weapons. 

The suspect was ordered to be detained for up to 48 hours and will be sent to the competent prosecutor's office with a criminal report.