The coach had just assumed leadership of the football club last month
Players fell to the ground in tears as they learned of their coach's passing in the middle of a match in the Serbian SuperLiga
FK Radnicki 1923 coach Mladen Zizovic fell suddenly and received treatment pitchside before being rushed to a healthcare center during his team's match at Mladost Lucani on the start of the week
The top-tier contest continued but was called off moments before half-time when information of the manager's demise reached the ground
Video of the game showed team members and personnel from each team in emotional pain at the news
Previously a Bosnia and Herzegovina national team member, 44, was recently selected leader of FK Radnicki 1923 on late October
"The organization has been deprived of not only a great professional but primarily a wonderful human being, a friend, and a competitor who, with his knowledge, vitality and integrity has made a significant impact on the souls of all who were acquainted with him"
The Bosnia and Herzegovina Football Association said its "sports circle has suffered the loss of an additional dedicated sports professional" with his demise
"In the course of his rich playing career, the coach was part of numerous clubs in the top division of the country, particularly HSK Zrinjski Mostar, Radnik Bijeljina and FK Borac Banja Luka, and he additionally represented the uniform of the Bosnia and Herzegovina national team"
"After ending his athletic journey, he dedicated himself to training, leading teams in the region and neighboring nations"
"The unexpected demise signifies a great loss for Bosnian-Herzegovinian football"
"The dedication for football and the legacy you left will be remembered by all forever"
Prominent teams additionally expressed condolences, including the famous club, who expressed their "most sincere sympathies"
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