Move by Serbia comes as it approaches an election, and as ties between Belgrade and Canberra sour after Sunday's high-profile deportation of Novak Djokovic

The move comes during a diplomatic spat between Serbia and Australia over the debate on whether to allow Novak Djokovic to enter the country because he has not been vaccinated against Covid-19

Following a 10-hour standoff, the Serbian was held overnight amid questions about whether he was exempt from the entry requirement to verify he received coronavirus vaccines