President Vucic has remained in power after eight months protesting a roof crash that critics claim to be linked to the transplant.
Tens of thousands of anti-corruption protesters took them to the streets of Belgrade, the capital of Serbia, and called for an early election to end President Alexander Vic’s 12-year rule.
Many officials of the riot device were deployed in protests on Saturday and were organized by Serbian university students.
Students were the driving force behind the nationwide demonstrations that began almost eight months ago after the fatal collapse of the roof of a renovated concrete railway station in the northern city of Novi Sad.
The tragedy last November marked a flashpoint for frustration with the government, and many Serbs say it was caused by alleged corruption and negligence in the province’s infrastructure projects.
Under pressure, Prime Minister Milos Vsevic resigned earlier this year, but Wuq is in power.
The Serbian railway company has suspended train services over the bomb threat that critics said had said, and it was an obvious bid to prevent people from traveling to Belgrade for a rally.
Hours before the rally at Slavija Square and Nemanjina Avenue, Vucic’s party sent buses of its own supporters from other parts of the country.
They have joined loyalists who have been camping near the Vitic office in central Belgrade since mid-March.
Vucic, a populist whose progressive party-led coalition holds 156 of its 250 congressional seats, told reporters on Saturday that an unspecified “foreign force” was behind the protest. He said police should be detained, but warned that “thugs face justice.”
VUCIC had previously refused SNAP elections and was intended to continue his second term.
However, his grip of power rattles, and opponents accusing him and his allies of denial of organized crime, violence against rivals and denial of media freedom.
Earlier this week, police arrested several people accused of conspiring to overthrow the government, banning several people from Croatia and Montenegro theatre directors from entering the country without explanation.