Glavas previously refused to be taken to prison in a police vehicle.
Around 8 pm, three police officers arrived at Glavas's flat. He asked them to make it possible for him, as an MP and Croatian Army general, to walk from his home to the prison, instead of being taken there in a police vehicle.
After a brief phone conversation between one of the policemen and the Osijek County Police Department, Glavas was told that he had to be taken to prison under police escort and in a police vehicle.
Glavas then told the police officers that they would have to "tie him up and drag him", because he would not go of his own accord.
He then went to his balcony, telling reporters and Osijek residents gathered in front of his flat that "nobody will destroy the sacredness of the Homeland War", that "Osijek was defended with our children's blood" and that "1,650 people were killed for the freedom of the city".
Together with his son, some 20 friends and fellow fighters, Osijek County Prefect Kresimir Bubalo and MPs Vladimir Sisljagic and Ivan Drmic, Glavas then left his flat and headed towards the prison, with his supporters singing and chanting slogans.
The county police department said in a statement this evening that Glavas was handed a warrant for his arrest at 8.10 pm in the presence of his lawyer and some 20 people who were found in his flat.
After that, Glavas and his supporters, disregarding police orders, set out towards the city prison, where Glavas was taken over by court police around 8.50 pm, the police said.
Although they had the right to use coercive measures considering the conduct of Glavas's supporters, the police did not use them in order to prevent the situation from escalating, the police said.