His players and coaching staff were informed later on that Zizovic, who had been taken to hospital after receiving medical treatment, had passed away – sparking scenes of devastation on the pitch.
Footage of the incident, which came 20 minutes after the match restarted, was shared to social media on Monday, with players breaking down in tears and comforting each other.
The game was initially suspended after Zizovic collapsed and was resumed by the referee once the Bosnian coach was transported to hospital.
After the players received the news, the referee abandoned the match.
Zizovic, who was taking charge of just his third game at Radnicki 1923 following his appointment on October 23, retired from his playing career in 2016.